Question

2) What are the roots of the quadratic equation x2 = 9 ?​

Answer 1

x^2= 9

x^2-9= 0

x^2-(3^2) = 0

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

x=3or x= -3

hence the roots of the quadratic equation x2 = 9 are 3,-3

Answer 2

Step-by-step explanation:

x2=9

x2-9=0

x2-(3)2=0

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

x+3=0 and x-3=0

x=3-0 and x=0-3

x=3 and x=-3