SOLUTION: simplify (1+i)to the 2nd power

SOLUTION: simplify (1+i)to the 2nd power

Algebra.Com

Question 29702: simplify (1+i)to the 2nd power
Answer by sdmmadam@yahoo.com(530) (Show Source): You can put this solution on YOUR website!
simplify (1+i)to the 2nd power
(1+i)^2 = 1^2+(i)^2+2X(1)X(i)
(using (a+b)^2 = a^2 +b^2+2ab where here a = 1 and b= i )
=1-1+2i ( the value of i^2 = -1 )
=0+2i
=2i
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