Question

This is Josh’s solution for the equation
x2-6x-7=0:

x2-6x-7=0
x2-6x=7
x2-6x+9=7+9
(x-3)2=16
x=19
x-3=-16
x=-13
Is Josh’s solution correct? Explain

Answer 1

No. After completing the square, Joshua should have taken the square root of the equation. As a result, he should have gotten:

x - 3 = 4 OR x - 3 = -4

And the result answer would have been x = 7 or x = -1

Answer 2

Answer:

no

Step-by-step explanation: