SOLUTION: Hi, I'm also stuck on the following question and help would be greatly appreciated! I keep getting -196 under the square root when I plug all the numbers into the quadratic formul

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Hi, I'm also stuck on the following question and help would be greatly appreciated! I keep getting -196 under the square root when I plug all the numbers into the quadratic formul      Log On


   

Question 904025: Hi, I'm also stuck on the following question and help would be greatly appreciated! I keep getting -196 under the square root when I plug all the numbers into the quadratic formula.
Directions--Solve the equation using the quadratic formula:
+x%5E2-16x%2B113=0+

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

+x%5E2-16x%2B113=0+

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%28-+%28-16%29+%2B-+sqrt%28+%28-16%29%5E2-4%2A1%2A113+%29%29%2F%282%2A1%29+
x+=+%2816+%2B-+sqrt%28+256-452+%29%29%2F2+
x+=+%2816+%2B-+sqrt%28+-196+%29%29%2F2+
x+=+%2816+%2B-+i%2Asqrt%28+196+%29%29%2F2+
x+=+%2816+%2B-+i%2A14%29%2F2+

x+=+%28cross%2816%298+%2B-+i%2Across%2814%297%29%2Fcross%282%291+

x+=+8+%2B-+7i+
solutions:
x+=+8+%2B+7i+
or
x+=+8+-+7i+