SOLUTION: Solve x^2-8x+4=0. I think the answer is D, but I'm not 100% sure. A) -4± 2√3 B) -4± 4√3 C) 4± 4√3 D) 4± 2√3

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Solve x^2-8x+4=0. I think the answer is D, but I'm not 100% sure. A) -4± 2√3 B) -4± 4√3 C) 4± 4√3 D) 4± 2√3      Log On


   

Question 176793: Solve x^2-8x+4=0. I think the answer is D, but I'm not 100% sure.
A) -4± 2√3
B) -4± 4√3
C) 4± 4√3
D) 4± 2√3
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You can check this way:
%28x+-+%284+%2B+2%2Asqrt%283%29%29%29%2A%28x+-+%284+-+2%2Asqrt%283%29%29%29+=+0+

x%5E2+-+4x+-+2%2Asqrt%283%29%2Ax+-+4x+%2B+2%2Asqrt%283%29%2Ax+%2B+16+-+12+=+0
x%5E2+-+8x+%2B+4+=+0
You were right