What is factor a^2-4a-5 ?

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

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factor a^2-4a-5

factor

a^{2} - 4 a - 5

(a + 1) (a - 5)

Solution steps

a^{2} - 4 a - 5

Break the expression into groups

= (a^{2} + a) + (- 5 a - 5)

Factor out

a

from

a^{2} + a : a (a + 1)

Factor out

- 5

from

- 5 a - 5 : - 5 (a + 1)

= a (a + 1) - 5 (a + 1)

Factor out common term

a + 1

= (a + 1) (a - 5)

\frac{- 18 m ^{2} n}{6 mn}

3 + 4 i

4 b^{4} - 9 b^{2}

16 (4 x - 1)^{2} - 46 = 35

3 m^{2} - 7 m + 4