What is factor a^2-2a-8 ?

The solution to factor a^2-2a-8 is (a+2)(a-4)

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factor a^2-2a-8

factor

a^{2} - 2 a - 8

(a + 2) (a - 4)

Solution steps

a^{2} - 2 a - 8

Break the expression into groups

= (a^{2} + 2 a) + (- 4 a - 8)

Factor out

a

from

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

Factor out

- 4

from

- 4 a - 8 : - 4 (a + 2)

= a (a + 2) - 4 (a + 2)

Factor out common term

a + 2

= (a + 2) (a - 4)

27 x^{3} - 1

8 \cdot 7

\frac{( 6 y + 7 )}{4} + \frac{( 8 - 5 y )}{3} = 5

\frac{2}{3} + 6

\frac{8}{11} - \frac{1}{4}