Question

Factorise : x2 + 8x + 15 .​

Answer 1

Answer:

x 2 −8x+15

=x 2

−5x−3x+15

=x(x−5)−3(x−5)

=(x−5)(x−3)

Answer 2

Answer:

Given , x2+8x+15

x2+3x+5x+15 (8x= 3x+5x)

x(x+3)+5(x+3) (common)

= (x+5)(x+3)

factors : x+5=0 x+3 =0

x = -5 x= -3