Evaluate
4\left(x+3y\right)^{2}
Expand
4x^{2}+24xy+36y^{2}
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4x^{2}+24xy+36y^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+6y\right)^{2}.
4x^{2}+24xy+36y^{2}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+6y\right)^{2}.
Examples
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