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)

628

\frac{1}{2} (m + 9) = 6

x^{2} + x = 72

- 4 = 4.2 \cdot \frac{1}{2} + b

x^{3} + 7 x^{2} - 9 x - 63