What is expand (2x+1)(x^2-x-7) ?

The solution to expand (2x+1)(x^2-x-7) is 2x^3-x^2-15x-7

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expand (2x+1)(x^2-x-7)

expand

(2 x + 1) (x^{2} - x - 7)

2 x^{3} - x^{2} - 15 x - 7

Solution steps

(2 x + 1) (x^{2} - x - 7)

Distribute parentheses

= 2 x x^{2} + 2 x (- x) + 2 x (- 7) + 1 \cdot x^{2} + 1 \cdot (- x) + 1 \cdot (- 7)

Simplify

2 x x^{2} + 2 x (- x) + 2 x (- 7) + 1 \cdot x^{2} + 1 \cdot (- x) + 1 \cdot (- 7) : 2 x^{3} - x^{2} - 15 x - 7

= 2 x^{3} - x^{2} - 15 x - 7

- 6 \times 7

12 + 18 - 27 + 50

+ ab - 3 a - 2 b + 6

- 2 x^{2} - x

t h e (0.3)

What is expand (2x+1)(x^2-x-7) ?
The solution to expand (2x+1)(x^2-x-7) is 2x^3-x^2-15x-7