What is factor a^2+9a+20 ?

The solution to factor a^2+9a+20 is (a+4)(a+5)

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factor a^2+9a+20

factor

a^{2} + 9 a + 20

(a + 4) (a + 5)

Solution steps

a^{2} + 9 a + 20

Break the expression into groups

= (a^{2} + 4 a) + (5 a + 20)

Factor out

a

from

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

Factor out

5

from

5 a + 20 : 5 (a + 4)

= a (a + 4) + 5 (a + 4)

Factor out common term

a + 4

= (a + 4) (a + 5)

\frac{3}{5} + \frac{1}{4} z + \frac{1}{4} < z

3 (- 4)^{2}

0 = 2 x^{2} + 4 x

8 - 2

1 1^{2}