Evaluate
\left(2x+3y\right)^{2}-2x+3
Expand
4x^{2}+12xy-2x+9y^{2}+3
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4x^{2}+12xy+9y^{2}-\left(2x-3\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+3y\right)^{2}.
4x^{2}+12xy+9y^{2}-2x+3
To find the opposite of 2x-3, find the opposite of each term.
4x^{2}+12xy+9y^{2}-\left(2x-3\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+3y\right)^{2}.
4x^{2}+12xy+9y^{2}-2x+3
To find the opposite of 2x-3, find the opposite of each term.
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