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

The solution to expand (-x^2-2x-7)(x^2-2x+1) is -x^4-4x^2+12x-7

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

expand

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

- x^{4} - 4 x^{2} + 12 x - 7

Solution steps

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

Distribute parentheses

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

Simplify

- x^{2} x^{2} - x^{2} (- 2 x) - x^{2} \cdot 1 - 2 x x^{2} - 2 x (- 2 x) - 2 x \cdot 1 - 7 x^{2} - 7 (- 2 x) - 7 \cdot 1 : - x^{4} - 4 x^{2} + 12 x - 7

= - x^{4} - 4 x^{2} + 12 x - 7

2 lo g_{9} (3)

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

4800

\frac{( 32 m ^{5} n ^{6} )}{( 2 m ^{3} n )}

(x + 7) (x + 10)

What is expand (-x^2-2x-7)(x^2-2x+1) ?
The solution to expand (-x^2-2x-7)(x^2-2x+1) is -x^4-4x^2+12x-7