Question

Solve by completely the square x^2-8x-20=0

Answer 1

x=5

Explanation:

x^2 is 1

Answer 2

x = -2, 10.

Explanation:

x^2-8x-20=0

(x - 4)^2 - 16 - 20 = 0

(x - 4)^2 = 36

x - 4 =+/-sqrt36

x = 4+6 , 4 - 6

x = -2,10