$\left(2x+3\right)\left(2y\right)^2$
$14u^2+23u-15$
$\int\frac{2x+3}{\sqrt{x+3}}dx$
$\frac{7}{2}x^2e^{2x+1}-\frac{7}{2}xe^{2x+1}$
$\left(15-14\right)+3-\left(12-5\cdot2\right)+\left(5+\frac{16}{4}\right)-5+\left(10-2^3\right)$
$130-96+210-100$
$\frac{\tan\:\left(26^{\circ\:}\right)+\tan\:\left(4^{\circ\:}\right)}{1-\tan\:\left(26^{\circ\:}\right)\tan\:\left(4^{\circ\:}\right)}$
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