Solve

x^{2 }+ 6x -7 = 0 by completing the square.

**Solution:-**

Solve for* x* by first isolating the constant and adding the square of half of the coefficient of* x* to both sides of the equation.

x^2 +6x -7 + 16 – 16 = 0

x^2 +6x + 9 – 16 =0

= 16

x +3 =± 4

x = -3 ± 4

x = -3+4 or -3 – 4

x = 1 ,-7