Question

Solve the quadratic equation: x^2+ 2x + 7 = 21

Answer 1

x1 = -4.872983346

x2 = 2.872983346

Explanation:

Given:

x^2+2x+7=21

Subtract 21 on both sides to get the right side equal to 0:

x^2+2x-14=0

Use the quadratic formula:

x1 = -4.872983346

x2 = 2.872983346