Question

Which of the following are solutions to the equation below?

Check all that apply.
4x2 - 12x+ 9 = 5

Answer 1

x = 3 + √5 / 2

Explanation:

4x²-12x+9=5

4(x²-3x+1=0)

x²-3x+1=0

(quadratic formula)

a=1 b=-3 c=1

x= -(-3)+√(-3)²-4x1x1 / 2x1

simplify:

x = 3+√5 / 2