Evaluate
\frac{\left(9x-8y\right)^{2}}{36}
Expand
-4xy+\frac{9x^{2}}{4}+\frac{16y^{2}}{9}
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\frac{9}{4}x^{2}-4xy+\frac{16}{9}y^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\frac{3}{2}x-\frac{4}{3}y\right)^{2}.
\frac{9}{4}x^{2}-4xy+\frac{16}{9}y^{2}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\frac{3}{2}x-\frac{4}{3}y\right)^{2}.
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