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Popular >

simplify (-4.2x^4)(9x^6)

Solution

simplify

(- 4.2 x^{4}) (9 x^{6})

Solution

- 37.8 x^{10}

Solution steps

(- 4.2 x^{4}) (9 x^{6})

Apply rule:

(- a) = - a

(- 4.2 x^{4}) = - 4.2 x^{4}

= - 4.2 x^{4} \cdot 9 x^{6}

Multiply the numbers:

- 4.2 \cdot 9 = - 37.8

= - 37.8 x^{4} x^{6}

Apply exponent rule:

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

x^{4} x^{6} = x^{4 + 6}

= - 37.8 x^{4 + 6}

Add the numbers:

4 + 6 = 10

= - 37.8 x^{10}

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Frequently Asked Questions (FAQ)

What is (-4.2x^4)(9x^6) ?
The solution to (-4.2x^4)(9x^6) is -37.8x^{10}