Finite Math Examples

${(a - 5 b)}^{6}$

Step 1

Use the Binomial Theorem.

$a^{6} + 6 a^{5} (- 5 b) + 15 a^{4} {(- 5 b)}^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2

Simplify each term.

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Step 2.1

Rewrite using the commutative property of multiplication.

$a^{6} + 6 \cdot - 5 a^{5} b + 15 a^{4} {(- 5 b)}^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.2

Multiply $6$ by $- 5$ .

$a^{6} - 30 a^{5} b + 15 a^{4} {(- 5 b)}^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.3

Apply the product rule to $- 5 b$ .

$a^{6} - 30 a^{5} b + 15 a^{4} ({(- 5)}^{2} b^{2}) + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.4

Rewrite using the commutative property of multiplication.

$a^{6} - 30 a^{5} b + 15 \cdot {(- 5)}^{2} a^{4} b^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.5

Raise $- 5$ to the power of $2$ .

$a^{6} - 30 a^{5} b + 15 \cdot 25 a^{4} b^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.6

Multiply $15$ by $25$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} + 20 a^{3} {(- 5 b)}^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.7

Apply the product rule to $- 5 b$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} + 20 a^{3} ({(- 5)}^{3} b^{3}) + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.8

Rewrite using the commutative property of multiplication.

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} + 20 \cdot {(- 5)}^{3} a^{3} b^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.9

Raise $- 5$ to the power of $3$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} + 20 \cdot - 125 a^{3} b^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.10

Multiply $20$ by $- 125$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 15 a^{2} {(- 5 b)}^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.11

Apply the product rule to $- 5 b$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 15 a^{2} ({(- 5)}^{4} b^{4}) + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.12

Rewrite using the commutative property of multiplication.

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 15 \cdot {(- 5)}^{4} a^{2} b^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.13

Raise $- 5$ to the power of $4$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 15 \cdot 625 a^{2} b^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.14

Multiply $15$ by $625$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} + 6 a {(- 5 b)}^{5} + {(- 5 b)}^{6}$

Step 2.15

Apply the product rule to $- 5 b$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} + 6 a ({(- 5)}^{5} b^{5}) + {(- 5 b)}^{6}$

Step 2.16

Rewrite using the commutative property of multiplication.

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} + 6 \cdot {(- 5)}^{5} a b^{5} + {(- 5 b)}^{6}$

Step 2.17

Raise $- 5$ to the power of $5$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} + 6 \cdot - 3125 a b^{5} + {(- 5 b)}^{6}$

Step 2.18

Multiply $6$ by $- 3125$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} - 18750 a b^{5} + {(- 5 b)}^{6}$

Step 2.19

Apply the product rule to $- 5 b$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} - 18750 a b^{5} + {(- 5)}^{6} b^{6}$

Step 2.20

Raise $- 5$ to the power of $6$ .

$a^{6} - 30 a^{5} b + 375 a^{4} b^{2} - 2500 a^{3} b^{3} + 9375 a^{2} b^{4} - 18750 a b^{5} + 15625 b^{6}$