What is factor a^2+2a-15 ?

The solution to factor a^2+2a-15 is (a-3)(a+5)

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factor a^2+2a-15

factor

a^{2} + 2 a - 15

(a - 3) (a + 5)

Solution steps

a^{2} + 2 a - 15

Break the expression into groups

= (a^{2} - 3 a) + (5 a - 15)

Factor out

a

from

a^{2} - 3 a : a (a - 3)

Factor out

5

from

5 a - 15 : 5 (a - 3)

= a (a - 3) + 5 (a - 3)

Factor out common term

a - 3

= (a - 3) (a + 5)

2 a^{3} + 28 a^{2} + 96 a

4 (\frac{9 + 8 x _{2}}{7}) = 10 - 3 x_{2}

10 r^{2} - 21 r = - 4 r + 6

x^{2} - x < 12

f (x) = (\frac{1}{4})^{x}