What is factor x^2-7x-120 ?

The solution to factor x^2-7x-120 is (x+8)(x-15)

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factor x^2-7x-120

factor

x^{2} - 7 x - 120

(x + 8) (x - 15)

Solution steps

x^{2} - 7 x - 120

Break the expression into groups

= (x^{2} + 8 x) + (- 15 x - 120)

Factor out

x

from

x^{2} + 8 x : x (x + 8)

Factor out

- 15

from

- 15 x - 120 : - 15 (x + 8)

= x (x + 8) - 15 (x + 8)

Factor out common term

x + 8

= (x + 8) (x - 15)

19!

- 8 x^{2} + 4 x + 5 = 0

31 + 3 x - 16 = - 3 (5 - x) + 6 x

x^{3} - 19 x^{2} + 90 x

e^{x} > 6