SOLUTION: Please help me solve this equation: x^2+16=-49 I have tried adding positive 16 to -49 to get -33 but i can't get past square routing the plus, minus ( -33 ). Thank You

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Please help me solve this equation: x^2+16=-49 I have tried adding positive 16 to -49 to get -33 but i can't get past square routing the plus, minus ( -33 ). Thank You      Log On


   

Question 672484: Please help me solve this equation: x^2+16=-49
I have tried adding positive 16 to -49 to get -33 but i can't get past square routing the plus, minus ( -33 ). Thank You
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B16=-49 we solve by the squaring method
When we add 64 then we get a perfect square on the left side of the equation
x%5E2%2B16x%2B64=64-49

%28x%2B8%29%5E2=15
Take the square root on both sides
(x+8) = +/- sqrt%2815%29
x= -8+sqrt%2815%29 OR x=-8-sqrt%2815%29