Question

Jacob tried to solve the following equation by completing the square. Interpret whether he solved it

correctly or if he made a mistake. If he did make a mistake, identify where the mistake was made and
correct his work. Find all solutions and show all of your work for full credit.
1. x2 + 8x + 12 = 0
2. x2 + 8x = -12
3. x2 + 8x + 8 = -4

Answer 1

1.2

Explanation:

I see for $1.$ $2x+8x+12=0$

$x(8+2)+12=0$

$10x+12=0$

$10x=-12$

x=-1.2