Trigonometria Exemplos

${(- 4 \cos (x) \sin (x) + 2 \cos (2 x))}^{2} + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1

Simplifique cada termo.

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Etapa 1.1

Reescreva ${(- 4 \cos (x) \sin (x) + 2 \cos (2 x))}^{2}$ como $(- 4 \cos (x) \sin (x) + 2 \cos (2 x)) (- 4 \cos (x) \sin (x) + 2 \cos (2 x))$ .

$(- 4 \cos (x) \sin (x) + 2 \cos (2 x)) (- 4 \cos (x) \sin (x) + 2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.2

Expanda $(- 4 \cos (x) \sin (x) + 2 \cos (2 x)) (- 4 \cos (x) \sin (x) + 2 \cos (2 x))$ usando o método FOIL.

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Etapa 1.2.1

Aplique a propriedade distributiva.

$- 4 \cos (x) \sin (x) (- 4 \cos (x) \sin (x) + 2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x) + 2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.2.2

Aplique a propriedade distributiva.

$- 4 \cos (x) \sin (x) (- 4 \cos (x) \sin (x)) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x) + 2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.2.3

Aplique a propriedade distributiva.

$- 4 \cos (x) \sin (x) (- 4 \cos (x) \sin (x)) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3

Simplifique e combine termos semelhantes.

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Etapa 1.3.1

Simplifique cada termo.

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Etapa 1.3.1.1

Multiplique $- 4 \cos (x) \sin (x) (- 4 \cos (x) \sin (x))$ .

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Etapa 1.3.1.1.1

Multiplique $- 4$ por $- 4$ .

$16 \cos (x) \sin (x) (\cos (x) \sin (x)) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.2

Eleve $\cos (x)$ à potência de $1$ .

$16 (\cos^{1} (x) \cos (x)) \sin (x) \sin (x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.3

Eleve $\cos (x)$ à potência de $1$ .

$16 (\cos^{1} (x) \cos^{1} (x)) \sin (x) \sin (x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 {\cos (x)}^{1 + 1} \sin (x) \sin (x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.5

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin (x) \sin (x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.6

Eleve $\sin (x)$ à potência de $1$ .

$16 \cos^{2} (x) (\sin^{1} (x) \sin (x)) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.7

Eleve $\sin (x)$ à potência de $1$ .

$16 \cos^{2} (x) (\sin^{1} (x) \sin^{1} (x)) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.8

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{2} (x) {\sin (x)}^{1 + 1} - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.1.9

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.2

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \cos (x) (\sin (x) \cdot 2) \cos (2 x) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.3

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 4 (\cos (x) (\sin (x) \cdot 2)) \cos (2 x) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.4

Reordene $\cos (x)$ e $\sin (x) \cdot 2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 (\sin (x) \cdot 2 \cos (x)) \cos (2 x) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.5

Reordene $\sin (x)$ e $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 (2 \cdot \sin (x) \cos (x)) \cos (2 x) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.6

Aplique a fórmula do arco duplo do seno.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) + 2 \cos (2 x) (- 4 \cos (x) \sin (x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.7

Reordene $2 \cos (2 x)$ e $- 4 \cos (x) \sin (x)$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \cos (x) \sin (x) (2 \cos (2 x)) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.8

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \cos (x) (\sin (x) \cdot 2) \cos (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.9

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 (\cos (x) (\sin (x) \cdot 2)) \cos (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.10

Reordene $\cos (x)$ e $\sin (x) \cdot 2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 (\sin (x) \cdot 2 \cos (x)) \cos (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.11

Reordene $\sin (x)$ e $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 (2 \cdot \sin (x) \cos (x)) \cos (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.12

Aplique a fórmula do arco duplo do seno.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.13

Multiplique $2 \cos (2 x) (2 \cos (2 x))$ .

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Etapa 1.3.1.13.1

Multiplique $2$ por $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 4 \cos (2 x) \cos (2 x) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.13.2

Eleve $\cos (2 x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 4 (\cos^{1} (2 x) \cos (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.13.3

Eleve $\cos (2 x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 4 (\cos^{1} (2 x) \cos^{1} (2 x)) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.13.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 4 {\cos (2 x)}^{1 + 1} + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.1.13.5

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 4 \sin (2 x) \cos (2 x) - 4 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.3.2

Subtraia $4 \sin (2 x) \cos (2 x)$ de $- 4 \sin (2 x) \cos (2 x)$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + {(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$

Etapa 1.4

Reescreva ${(2 \cos (2 x) + 4 \sin (x) \cos (x))}^{2}$ como $(2 \cos (2 x) + 4 \sin (x) \cos (x)) (2 \cos (2 x) + 4 \sin (x) \cos (x))$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + (2 \cos (2 x) + 4 \sin (x) \cos (x)) (2 \cos (2 x) + 4 \sin (x) \cos (x))$

Etapa 1.5

Expanda $(2 \cos (2 x) + 4 \sin (x) \cos (x)) (2 \cos (2 x) + 4 \sin (x) \cos (x))$ usando o método FOIL.

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Etapa 1.5.1

Aplique a propriedade distributiva.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 2 \cos (2 x) (2 \cos (2 x) + 4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x) + 4 \sin (x) \cos (x))$

Etapa 1.5.2

Aplique a propriedade distributiva.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x) + 4 \sin (x) \cos (x))$

Etapa 1.5.3

Aplique a propriedade distributiva.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 2 \cos (2 x) (2 \cos (2 x)) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6

Simplifique e combine termos semelhantes.

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Etapa 1.6.1

Simplifique cada termo.

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Etapa 1.6.1.1

Multiplique $2 \cos (2 x) (2 \cos (2 x))$ .

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Etapa 1.6.1.1.1

Multiplique $2$ por $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos (2 x) \cos (2 x) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.1.2

Eleve $\cos (2 x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 (\cos^{1} (2 x) \cos (2 x)) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.1.3

Eleve $\cos (2 x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 (\cos^{1} (2 x) \cos^{1} (2 x)) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.1.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 {\cos (2 x)}^{1 + 1} + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.1.5

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 2 \cos (2 x) (4 \sin (x) \cos (x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.2

Reordene $2 \cos (2 x)$ e $4 \sin (x) \cos (x)$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.3

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (x) (\cos (x) \cdot 2) \cos (2 x) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.4

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 (\sin (x) (\cos (x) \cdot 2)) \cos (2 x) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.5

Reordene $\sin (x) \cos (x)$ e $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 (2 \cdot (\sin (x) \cos (x))) \cos (2 x) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.6

Aplique a fórmula do arco duplo do seno.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (x) \cos (x) (2 \cos (2 x)) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.7

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (x) (\cos (x) \cdot 2) \cos (2 x) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.8

Adicione parênteses.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 (\sin (x) (\cos (x) \cdot 2)) \cos (2 x) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.9

Reordene $\sin (x) \cos (x)$ e $2$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 (2 \cdot (\sin (x) \cos (x))) \cos (2 x) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.10

Aplique a fórmula do arco duplo do seno.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$

Etapa 1.6.1.11

Multiplique $4 \sin (x) \cos (x) (4 \sin (x) \cos (x))$ .

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Etapa 1.6.1.11.1

Multiplique $4$ por $4$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin (x) \cos (x) (\sin (x) \cos (x))$

Etapa 1.6.1.11.2

Eleve $\sin (x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 (\sin^{1} (x) \sin (x)) \cos (x) \cos (x)$

Etapa 1.6.1.11.3

Eleve $\sin (x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 (\sin^{1} (x) \sin^{1} (x)) \cos (x) \cos (x)$

Etapa 1.6.1.11.4

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 {\sin (x)}^{1 + 1} \cos (x) \cos (x)$

Etapa 1.6.1.11.5

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) \cos (x) \cos (x)$

Etapa 1.6.1.11.6

Eleve $\cos (x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) (\cos^{1} (x) \cos (x))$

Etapa 1.6.1.11.7

Eleve $\cos (x)$ à potência de $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) (\cos^{1} (x) \cos^{1} (x))$

Etapa 1.6.1.11.8

Use a regra da multiplicação de potências $a^{m} a^{n} = a^{m + n}$ para combinar expoentes.

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) {\cos (x)}^{1 + 1}$

Etapa 1.6.1.11.9

Some $1$ e $1$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 4 \sin (2 x) \cos (2 x) + 4 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) \cos^{2} (x)$

Etapa 1.6.2

Some $4 \sin (2 x) \cos (2 x)$ e $4 \sin (2 x) \cos (2 x)$ .

$16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 8 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) \cos^{2} (x)$

Etapa 2

Simplifique somando os termos.

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Etapa 2.1

Combine os termos opostos em $16 \cos^{2} (x) \sin^{2} (x) - 8 \sin (2 x) \cos (2 x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 8 \sin (2 x) \cos (2 x) + 16 \sin^{2} (x) \cos^{2} (x)$ .

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Etapa 2.1.1

Some $- 8 \sin (2 x) \cos (2 x)$ e $8 \sin (2 x) \cos (2 x)$ .

$16 \cos^{2} (x) \sin^{2} (x) + 0 + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 16 \sin^{2} (x) \cos^{2} (x)$

Etapa 2.1.2

Some $16 \cos^{2} (x) \sin^{2} (x)$ e $0$ .

$16 \cos^{2} (x) \sin^{2} (x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 16 \sin^{2} (x) \cos^{2} (x)$

Etapa 2.2

Reordene os fatores de $16 \sin^{2} (x) \cos^{2} (x)$ .

$16 \cos^{2} (x) \sin^{2} (x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x) + 16 \cos^{2} (x) \sin^{2} (x)$

Etapa 2.3

Some $16 \cos^{2} (x) \sin^{2} (x)$ e $16 \cos^{2} (x) \sin^{2} (x)$ .

$32 \cos^{2} (x) \sin^{2} (x) + 4 \cos^{2} (2 x) + 4 \cos^{2} (2 x)$

Etapa 2.4

Some $4 \cos^{2} (2 x)$ e $4 \cos^{2} (2 x)$ .

$32 \cos^{2} (x) \sin^{2} (x) + 8 \cos^{2} (2 x)$