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Popular >

simplify (-7x^2)(4x)

Solution

simplify

(- 7 x^{2}) (4 x)

Solution

- 28 x^{3}

Solution steps

(- 7 x^{2}) (4 x)

Apply rule:

(- a) = - a

(- 7 x^{2}) = - 7 x^{2}

= - 7 x^{2} \cdot 4 x

Multiply the numbers:

- 7 \cdot 4 = - 28

= - 28 x^{2} x

Apply exponent rule:

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

x^{2} x = x^{2 + 1}

= - 28 x^{2 + 1}

Add the numbers:

2 + 1 = 3

= - 28 x^{3}

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Frequently Asked Questions (FAQ)

What is (-7x^2)(4x) ?
The solution to (-7x^2)(4x) is -28x^3