What is factor x^2-8x-9 ?

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

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factor x^2-8x-9

factor

x^{2} - 8 x - 9

(x + 1) (x - 9)

Solution steps

x^{2} - 8 x - 9

Break the expression into groups

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

Factor out

x

from

x^{2} + x : x (x + 1)

Factor out

- 9

from

- 9 x - 9 : - 9 (x + 1)

= x (x + 1) - 9 (x + 1)

Factor out common term

x + 1

= (x + 1) (x - 9)

g^{2} - 10 g = - 19

2 (4 x - 3) - 8 = 4 + 2 x

y^{2} - 8 y + 12 = 0

- x \leq 5

3 x^{2} + 2 x + 4 > 0