Evaluate
\frac{\left(8x+3\right)^{2}}{64}
Expand
x^{2}+\frac{3x}{4}+\frac{9}{64}
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x^{2}+\frac{3}{4}x+\frac{9}{64}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+\frac{3}{8}\right)^{2}.
x^{2}+\frac{3}{4}x+\frac{9}{64}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(x+\frac{3}{8}\right)^{2}.
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