$5 ( 2 x + 1 ) ^ { 2 }$
$5^2-2\cdot4$
$5n+5+5+7n+6n^2$
$7\sqrt{x}-5\sqrt[3]{x^{2}}+2\sqrt[5]{x^{4}}$
$\int\left(\frac{2\sin\left(x\right)}{\sin\left(2x\right)}\right)dx$
$\frac{d}{dx}\frac{x^2}{y}+3y-5+x^7=y^2$
$\lim_{x\to\infty}\left(-6-\frac{3}{x^2}\right)$
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