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

The solution to expand (x^2-9)(x^2+x-2) is x^4+x^3-11x^2-9x+18

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

expand

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

x^{4} + x^{3} - 11 x^{2} - 9 x + 18

Solution steps

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

Distribute parentheses

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

Simplify

x^{2} x^{2} + x^{2} x + x^{2} (- 2) - 9 x^{2} - 9 x - 9 (- 2) : x^{4} + x^{3} - 11 x^{2} - 9 x + 18

= x^{4} + x^{3} - 11 x^{2} - 9 x + 18

2 0^{2} + 4 0^{2}

\frac{3 + i}{1 + 2 i}

1 - \frac{1}{n}

3 (a - 5)

(0.09)^{\frac{- 1}{2}}

What is expand (x^2-9)(x^2+x-2) ?
The solution to expand (x^2-9)(x^2+x-2) is x^4+x^3-11x^2-9x+18