Pré-álgebra Exemplos

$(15 x - 121 x^{12} + x^{9} - x^{7} + 3 x^{2}) + (x^{7} - 68 x^{2} - x^{9})$

Etapa 1

Remova os parênteses.

$15 x - 121 x^{12} + x^{9} - x^{7} + 3 x^{2} + x^{7} - 68 x^{2} - x^{9}$

Etapa 2

Combine os termos opostos em $15 x - 121 x^{12} + x^{9} - x^{7} + 3 x^{2} + x^{7} - 68 x^{2} - x^{9}$ .

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Etapa 2.1

Some $- x^{7}$ e $x^{7}$ .

$15 x - 121 x^{12} + x^{9} + 3 x^{2} + 0 - 68 x^{2} - x^{9}$

Etapa 2.2

Some $15 x - 121 x^{12} + x^{9} + 3 x^{2}$ e $0$ .

$15 x - 121 x^{12} + x^{9} + 3 x^{2} - 68 x^{2} - x^{9}$

Etapa 2.3

Subtraia $x^{9}$ de $x^{9}$ .

$15 x - 121 x^{12} + 3 x^{2} - 68 x^{2} + 0$

Etapa 2.4

Some $15 x - 121 x^{12} + 3 x^{2} - 68 x^{2}$ e $0$ .

$15 x - 121 x^{12} + 3 x^{2} - 68 x^{2}$

Etapa 3

Subtraia $68 x^{2}$ de $3 x^{2}$ .

$15 x - 121 x^{12} - 65 x^{2}$