Evaluate
\frac{\left(3x-7\right)^{2}}{16}
Expand
\frac{9x^{2}}{16}-\frac{21x}{8}+\frac{49}{16}
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\frac{9}{16}x^{2}-\frac{21}{8}x+\frac{49}{16}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\frac{3}{4}x-\frac{7}{4}\right)^{2}.
\frac{9}{16}x^{2}-\frac{21}{8}x+\frac{49}{16}
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\frac{3}{4}x-\frac{7}{4}\right)^{2}.
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