4: x+4=±√11
5: x=-4±√11
6: x≈-4+√11 and x≈-4-√11
The first three steps of completing the square to solve the quadratic equation x^2 + 8x+ 5=0 are shown below.
1: x^2+8x=-5
2: x^2+8x+16=-5+16
3: (x+4)^2=11
What are the next three steps?
1 answer
1 answer