SOLUTION: Can you help me with this problem; 4(x+2)^2+320=0? I'm having some trouble trying to figure out the answer of this comples number.

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Can you help me with this problem; 4(x+2)^2+320=0? I'm having some trouble trying to figure out the answer of this comples number.       Log On


   

Question 739310: Can you help me with this problem; 4(x+2)^2+320=0? I'm having some trouble trying to figure out the answer of this comples number.
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
%0D%0A+4%28x%2B2%29%5E2%2B320=0%0D%0A

%0D%0A+%28x%2B2%29%5E2=-320%2F4%0D%0A

Square rooting both sides then subtracting 2 (from both sides) leads to

%0D%0Ax-2%2B2%2Ai%2Asqrt%285%29%0D%0A

or

%0D%0Ax=-2-2%2Ai%2Asqrt%285%29%0D%0A