Question

Find the roots of the quadratic equation x^2+2x-15=0

Answer 1

Answer:3 and -5

Step-by-step explanation:

x²+2x-15=0

x²+5x-3x-15=0

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

x=3 or x=-5

Answer 2

Answer:

x = -5 and 3

Step-by-step explanation:

x^2+2x-15=0

x^2-3x+5x-15=0

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

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

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

x= 3 and x= -5