What is factor x^2-4x-77 ?

The solution to factor x^2-4x-77 is (x+7)(x-11)

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factor x^2-4x-77

factor

x^{2} - 4 x - 77

(x + 7) (x - 11)

Solution steps

x^{2} - 4 x - 77

Break the expression into groups

= (x^{2} + 7 x) + (- 11 x - 77)

Factor out

x

from

x^{2} + 7 x : x (x + 7)

Factor out

- 11

from

- 11 x - 77 : - 11 (x + 7)

= x (x + 7) - 11 (x + 7)

Factor out common term

x + 7

= (x + 7) (x - 11)

∣ x ∣ + 5 \leq 9

(\frac{5}{8})^{- 1}

\frac{1}{5} + \frac{3}{5}

3 x^{2} - 4 x = - 1