What is factor x^2-1x-20 ?

The solution to factor x^2-1x-20 is (x+4)(x-5)

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factor x^2-1x-20

factor

x^{2} - 1 x - 20

(x + 4) (x - 5)

Solution steps

x^{2} - 1 \cdot x - 20

Break the expression into groups

= (x^{2} + 4 x) + (- 5 x - 20)

Factor out

x

from

x^{2} + 4 x : x (x + 4)

Factor out

- 5

from

- 5 x - 20 : - 5 (x + 4)

= x (x + 4) - 5 (x + 4)

Factor out common term

x + 4

= (x + 4) (x - 5)

- 2 + 2

(3^{2})^{4}

x^{2} - 50 x + 49

\frac{5}{3 x + 1} - \frac{20}{9 x ^{2} - 1} < \frac{1}{3 x - 1}

4 x - 6 = 2