SOLUTION: Please solve this problem: (3x-2y)squared Answer sheet says it 9x squared+4y squared-12xy. I understand the 9x squared + 4y squared but not the -12xy. Thanks, S

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please solve this problem: (3x-2y)squared Answer sheet says it 9x squared+4y squared-12xy. I understand the 9x squared + 4y squared but not the -12xy. Thanks, S      Log On


   

Question 94895: Please solve this problem: (3x-2y)squared
Answer sheet says it 9x squared+4y squared-12xy.
I understand the 9x squared + 4y squared but not the -12xy.
Thanks,
S
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Please solve this problem:
(3x-2y)^2 = (3x)^2 -2*(3x)(2y)+(2y)^2
= 9x^2-12xy+4y^2
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Cheers,
Stan H.