What is expand (x+2)(3x^2-7x-4) ?

The solution to expand (x+2)(3x^2-7x-4) is 3x^3-x^2-18x-8

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expand (x+2)(3x^2-7x-4)

expand

(x + 2) (3 x^{2} - 7 x - 4)

3 x^{3} - x^{2} - 18 x - 8

Solution steps

(x + 2) (3 x^{2} - 7 x - 4)

Distribute parentheses

= x \cdot 3 x^{2} + x (- 7 x) + x (- 4) + 2 \cdot 3 x^{2} + 2 (- 7 x) + 2 (- 4)

Simplify

x \cdot 3 x^{2} + x (- 7 x) + x (- 4) + 2 \cdot 3 x^{2} + 2 (- 7 x) + 2 (- 4) : 3 x^{3} - x^{2} - 18 x - 8

= 3 x^{3} - x^{2} - 18 x - 8

\frac{1}{9} \div \frac{1}{3}

(2 x + 6)^{3}

1. 5^{4}

\frac{8 + 7 i}{5 - 8 i}

3 (\frac{1}{4})

What is expand (x+2)(3x^2-7x-4) ?
The solution to expand (x+2)(3x^2-7x-4) is 3x^3-x^2-18x-8