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Popular >

expand 3x(x^2+7)

Solution

expand

3 x (x^{2} + 7)

Solution

3 x^{3} + 21 x

Solution steps

3 x (x^{2} + 7)

Apply the distributive law:

a (b + c) = ab + a c

3 x (x^{2} + 7) = 3 x x^{2} + 3 x \cdot 7

= 3 x x^{2} + 3 x \cdot 7

Simplify

3 x x^{2} + 3 x \cdot 7 : 3 x^{3} + 21 x

= 3 x^{3} + 21 x

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Frequently Asked Questions (FAQ)

What is expand 3x(x^2+7) ?
The solution to expand 3x(x^2+7) is 3x^3+21x