What is expand (x-1)(-x^2+x+9) ?

The solution to expand (x-1)(-x^2+x+9) is -x^3+2x^2+8x-9

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expand (x-1)(-x^2+x+9)

expand

(x - 1) (- x^{2} + x + 9)

- x^{3} + 2 x^{2} + 8 x - 9

Solution steps

(x - 1) (- x^{2} + x + 9)

Distribute parentheses

= x (- x^{2}) + xx + x \cdot 9 - 1 \cdot (- x^{2}) - 1 \cdot x - 1 \cdot 9

Simplify

x (- x^{2}) + xx + x \cdot 9 - 1 \cdot (- x^{2}) - 1 \cdot x - 1 \cdot 9 : - x^{3} + 2 x^{2} + 8 x - 9

= - x^{3} + 2 x^{2} + 8 x - 9

9 \times (- 2)

27 x - 3

\frac{50}{10}

\frac{5 x}{x - 2} - \frac{7}{2 - x}

\frac{2 ^{4}}{2 ^{- 2}}

What is expand (x-1)(-x^2+x+9) ?
The solution to expand (x-1)(-x^2+x+9) is -x^3+2x^2+8x-9