What is factor x^2-3x-40 ?

The solution to factor x^2-3x-40 is (x+5)(x-8)

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factor x^2-3x-40

factor

x^{2} - 3 x - 40

(x + 5) (x - 8)

Solution steps

x^{2} - 3 x - 40

Break the expression into groups

= (x^{2} + 5 x) + (- 8 x - 40)

Factor out

x

from

x^{2} + 5 x : x (x + 5)

Factor out

- 8

from

- 8 x - 40 : - 8 (x + 5)

= x (x + 5) - 8 (x + 5)

Factor out common term

x + 5

= (x + 5) (x - 8)

12 z^{2} + 7 z - 12

9 x^{2} + 21 x + 10 = 0

x^{2} - 1 x - 2

(- 7 i)^{2}

\frac{4}{3} + \frac{4}{3}