What is factor x^2-18x-40 ?

The solution to factor x^2-18x-40 is (x+2)(x-20)

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factor x^2-18x-40

factor

x^{2} - 18 x - 40

(x + 2) (x - 20)

Solution steps

x^{2} - 18 x - 40

Break the expression into groups

= (x^{2} + 2 x) + (- 20 x - 40)

Factor out

x

from

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

Factor out

- 20

from

- 20 x - 40 : - 20 (x + 2)

= x (x + 2) - 20 (x + 2)

Factor out common term

x + 2

= (x + 2) (x - 20)

5 x - 4 = 3 x - 2

- 32 > 1.6 h

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3 (4 x + 6) = 2 (5 x + 4)

- 3 x - 1 + 2 x = 2 x + 5