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Popular >

simplify (7b^4)(-9b^2)

Solution

simplify

(7 b^{4}) (- 9 b^{2})

Solution

- 63 b^{6}

Solution steps

(7 b^{4}) (- 9 b^{2})

Apply rule:

a (- b) = - ab

(7 b^{4}) (- 9 b^{2}) = - 7 b^{4} \cdot 9 b^{2}

= - 7 b^{4} \cdot 9 b^{2}

Multiply the numbers:

- 7 \cdot 9 = - 63

= - 63 b^{4} b^{2}

Apply exponent rule:

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

b^{4} b^{2} = b^{4 + 2}

= - 63 b^{4 + 2}

Add the numbers:

4 + 2 = 6

= - 63 b^{6}

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Frequently Asked Questions (FAQ)

What is (7b^4)(-9b^2) ?
The solution to (7b^4)(-9b^2) is -63b^6