Question

Solve this quadratic equation: (x+3) (x-3) = 40

Answer 1

Step-by-step explanation:

(x+3) (x-3) = 40

(x^2)-9=40

(x^2)=49

x=7

Answer 2

Answer:

x=±7

Step-by-step explanation:

(x+3)(x-3)=40

x²-3x+3x-9=40

x²=40+9

x²=49

x=√49

x=±7