Expand
9x^{2}+12xy-6x+4y^{2}-7y
Evaluate
\left(3x+2y\right)^{2}-6x-7y
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9x^{2}+12xy+4y^{2}-6x-7y
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(3x+2y\right)^{2}.
9x^{2}+12xy+4y^{2}-6x-7y
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(3x+2y\right)^{2}.
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