Basic Math Examples

${(a + b)}^{3} + {(c - d)}^{3}$

Step 1

Since both terms are perfect cubes, factor using the sum of cubes formula, $a^{3} + b^{3} = (a + b) (a^{2} - a b + b^{2})$ where $a = a + b$ and $b = c - d$ .

$(a + b + c - d) ({(a + b)}^{2} - (a + b) (c - d) + {(c - d)}^{2})$

Step 2

Simplify.

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Step 2.1

Rewrite ${(a + b)}^{2}$ as $(a + b) (a + b)$ .

$(a + b + c - d) ((a + b) (a + b) - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.2

Expand $(a + b) (a + b)$ using the FOIL Method.

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Step 2.2.1

Apply the distributive property.

$(a + b + c - d) (a (a + b) + b (a + b) - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.2.2

Apply the distributive property.

$(a + b + c - d) (a \cdot a + a b + b (a + b) - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.2.3

Apply the distributive property.

$(a + b + c - d) (a \cdot a + a b + b a + b \cdot b - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.3

Simplify and combine like terms.

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Step 2.3.1

Simplify each term.

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Step 2.3.1.1

Multiply $a$ by $a$ .

$(a + b + c - d) (a^{2} + a b + b a + b \cdot b - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.3.1.2

Multiply $b$ by $b$ .

$(a + b + c - d) (a^{2} + a b + b a + b^{2} - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.3.2

Add $a b$ and $b a$ .

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Step 2.3.2.1

Reorder $b$ and $a$ .

$(a + b + c - d) (a^{2} + a b + a b + b^{2} - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.3.2.2

Add $a b$ and $a b$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - (a + b) (c - d) + {(c - d)}^{2})$

Step 2.4

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} + (- a - b) (c - d) + {(c - d)}^{2})$

Step 2.5

Expand $(- a - b) (c - d)$ using the FOIL Method.

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Step 2.5.1

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a (c - d) - b (c - d) + {(c - d)}^{2})$

Step 2.5.2

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c - a (- d) - b (c - d) + {(c - d)}^{2})$

Step 2.5.3

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c - a (- d) - b c - b (- d) + {(c - d)}^{2})$

Step 2.6

Simplify each term.

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Step 2.6.1

Rewrite using the commutative property of multiplication.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c - 1 \cdot - 1 a d - b c - b (- d) + {(c - d)}^{2})$

Step 2.6.2

Multiply $- 1$ by $- 1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + 1 a d - b c - b (- d) + {(c - d)}^{2})$

Step 2.6.3

Multiply $a$ by $1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c - b (- d) + {(c - d)}^{2})$

Step 2.6.4

Rewrite using the commutative property of multiplication.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c - 1 \cdot - 1 b d + {(c - d)}^{2})$

Step 2.6.5

Multiply $- 1$ by $- 1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + 1 b d + {(c - d)}^{2})$

Step 2.6.6

Multiply $b$ by $1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + {(c - d)}^{2})$

Step 2.7

Rewrite ${(c - d)}^{2}$ as $(c - d) (c - d)$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + (c - d) (c - d))$

Step 2.8

Expand $(c - d) (c - d)$ using the FOIL Method.

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Step 2.8.1

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c (c - d) - d (c - d))$

Step 2.8.2

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c \cdot c + c (- d) - d (c - d))$

Step 2.8.3

Apply the distributive property.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c \cdot c + c (- d) - d c - d (- d))$

Step 2.9

Simplify and combine like terms.

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Step 2.9.1

Simplify each term.

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Step 2.9.1.1

Multiply $c$ by $c$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} + c (- d) - d c - d (- d))$

Step 2.9.1.2

Rewrite using the commutative property of multiplication.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c - d (- d))$

Step 2.9.1.3

Rewrite using the commutative property of multiplication.

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c - 1 \cdot - 1 d \cdot d)$

Step 2.9.1.4

Multiply $d$ by $d$ by adding the exponents.

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Step 2.9.1.4.1

Move $d$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c - 1 \cdot - 1 (d \cdot d))$

Step 2.9.1.4.2

Multiply $d$ by $d$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c - 1 \cdot - 1 d^{2})$

Step 2.9.1.5

Multiply $- 1$ by $- 1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c + 1 d^{2})$

Step 2.9.1.6

Multiply $d^{2}$ by $1$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - d c + d^{2})$

Step 2.9.2

Subtract $d c$ from $- c d$ .

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Step 2.9.2.1

Move $d$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - c d - 1 c d + d^{2})$

Step 2.9.2.2

Subtract $c d$ from $- c d$ .

$(a + b + c - d) (a^{2} + 2 a b + b^{2} - a c + a d - b c + b d + c^{2} - 2 c d + d^{2})$