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Popular >

simplify (-7b^5)(8b^2)

Solution

simplify

(- 7 b^{5}) (8 b^{2})

Solution

- 56 b^{7}

Solution steps

(- 7 b^{5}) (8 b^{2})

Apply rule:

(- a) = - a

(- 7 b^{5}) = - 7 b^{5}

= - 7 b^{5} \cdot 8 b^{2}

Multiply the numbers:

- 7 \cdot 8 = - 56

= - 56 b^{5} b^{2}

Apply exponent rule:

a^{b} \cdot a^{c} = a^{b + c}

b^{5} b^{2} = b^{5 + 2}

= - 56 b^{5 + 2}

Add the numbers:

5 + 2 = 7

= - 56 b^{7}

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Frequently Asked Questions (FAQ)

What is (-7b^5)(8b^2) ?
The solution to (-7b^5)(8b^2) is -56b^7