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Popular >

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

Solution

expand

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

Solution

- 2 x^{2} - 16 x + 18

Solution steps

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

Expand

- 2 (x + 9) (x - 1) : - 2 (x^{2} + 8 x - 9)

= - 2 (x^{2} + 8 x - 9)

Apply the distributive law:

m (a + b + c) = ma + mb + m c

- 2 (x^{2} + 8 x - 9) = - 2 x^{2} - 2 \cdot 8 x - 2 (- 9)

= - 2 x^{2} - 2 \cdot 8 x - 2 (- 9)

Simplify

- 2 x^{2} - 2 \cdot 8 x - 2 (- 9) : - 2 x^{2} - 16 x + 18

= - 2 x^{2} - 16 x + 18

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\frac{x ^{2}}{5} \times \frac{20}{x}

Frequently Asked Questions (FAQ)

What is expand-2(x+9)(x-1) ?
The solution to expand-2(x+9)(x-1) is -2x^2-16x+18