Evaluate
\frac{\left(10x+3\right)^{2}}{25}
Expand
4x^{2}+\frac{12x}{5}+\frac{9}{25}
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4x^{2}+\frac{12}{5}x+\frac{9}{25}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+\frac{3}{5}\right)^{2}.
4x^{2}+\frac{12}{5}x+\frac{9}{25}
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(2x+\frac{3}{5}\right)^{2}.
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