What is factor z^2+7z-18 ?

The solution to factor z^2+7z-18 is (z-2)(z+9)

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factor z^2+7z-18

factor

z^{2} + 7 z - 18

(z - 2) (z + 9)

Solution steps

z^{2} + 7 z - 18

Break the expression into groups

= (z^{2} - 2 z) + (9 z - 18)

Factor out

z

from

z^{2} - 2 z : z (z - 2)

Factor out

9

from

9 z - 18 : 9 (z - 2)

= z (z - 2) + 9 (z - 2)

Factor out common term

z - 2

= (z - 2) (z + 9)

(- 11 x^{3} y)^{- 2}

14 x^{2} - 3 x - 5

6 x^{3} - 60 x^{2} + 144 x

- 3 + 2 z \geq 9

8 x^{2} - 13 x = 8