SOLUTION: c{{{sqrt(7)-7+9i}}}6-sqrt(-81) these are the 2 problems im having trouble with

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: c{{{sqrt(7)-7+9i}}}6-sqrt(-81) these are the 2 problems im having trouble with      Log On


   

Question 524821: csqrt%287%29-7%2B9i6-sqrt(-81)
these are the 2 problems im having trouble with
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(sqrt(7)+i^2)-(6-sqrt(-81)
i^2=-1
%28sqrt%287%29-1%29-%286-sqrt%28-1%2A3%5E4%29%29
%28sqrt%287%29-1%29-%286-9i%29

sqrt%287%29-1-6%2B9i
%28sqrt%287%29-7%2B9i%29
-----------------
sqrt%28-2%29%2B2i%29%286%2B5i%29
%28sqrt%28-1%29%2ASqrt%282%29%2B2i%29%286%2B5i%29
sqrt%282%29i%2B2i%29%286%2B5i%29
6sqrt%282%29i%2B5sqrt%282%29%2Ai%5E2%2B12i%2B10i%5E2
6sqrt%282%29i-5sqrt%282%29%2B12i-10
6sqrt%282%29i-5sqrt%282%29%2B12i-10
m.ananth@hotmail.ca