Question

4)Solve the following quadratic equation by

factorisation method

X

2

+8x+15=0​

Answer 1

Answer:

x= -3,-5

Step-by-step explanation:

Factorize x²+8x+15=0

x²+(3x+5x)+15 = 0

x²+3x+5x+15 = 0

x(x+3) + 5(x+3) = 0

(x+5)(x+3)=0

x+5=0 ⇒ x=-5

x+3=0⇒ x= -3