What is expand (x-2)(x^2-2x-9) ?

The solution to expand (x-2)(x^2-2x-9) is x^3-4x^2-5x+18

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expand (x-2)(x^2-2x-9)

expand

(x - 2) (x^{2} - 2 x - 9)

x^{3} - 4 x^{2} - 5 x + 18

Solution steps

(x - 2) (x^{2} - 2 x - 9)

Distribute parentheses

= x x^{2} + x (- 2 x) + x (- 9) - 2 x^{2} - 2 (- 2 x) - 2 (- 9)

Simplify

x x^{2} + x (- 2 x) + x (- 9) - 2 x^{2} - 2 (- 2 x) - 2 (- 9) : x^{3} - 4 x^{2} - 5 x + 18

= x^{3} - 4 x^{2} - 5 x + 18

e^{\frac{- x ^{2}}{2}}

- 7 + (- 5)

\frac{25 - 36 x ^{4}}{5 - 6 x ^{2}}

\frac{x ^{2} - 14 x + 49}{6 x ^{2} - 42 x}

\frac{2 x ^{2} + 4 x}{x ^{2} + 5 x + 6}

What is expand (x-2)(x^2-2x-9) ?
The solution to expand (x-2)(x^2-2x-9) is x^3-4x^2-5x+18