Question

Which of the following are solutions to the equation below? Check all that apply. 4x^2 + 12x + 9 = 25

Answer 1

Answer: 1 or -4

Explanation:

Answer 2

x = 1 or -4

Explanation:

4x² + 12x + 9 = 25

4x² +12x + 9 - 25 = 0

4x² + 12x - 16 = 0

Dividing by 4 throughout gives;

x² + 3x - 4 = 0

Applying the quadratic formula you get;

x = 1 or -4