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Please Help! Find the product of (x + (3+5i))^2.

Please Help! Find the product of (x + (3+5i))^2.
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3 votes
Please Help!

Find the product of (x + (3+5i))^2.

User Pete Wilson
by
8.1k points

2 Answers

2 votes
the answer is 25i2+10ix+x2+30i+6x+9
User Jardo
by
7.5k points
3 votes
(x+(3+5i))^2
(a+b)^2=a^2+b^2+2ab
x^2+(3+5i)^2+2x(3+5i)
x^2+9-25+2*3*5i+6x+10xi
x^2-16+30i+10xi+6x
x^2+30i+10xi+6x-16
User Blunders
by
7.7k points
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