$18.72-11.47$
$\int\left(5x^4-4x^3-2x+3x^2-7\right)dx$
$0.5\left(1-\cos\left(x\right)\right)$
$12\csc^2\left(x\right)-14=2\cot\left(x\right)$
$\ln\left(\sqrt{5-x^2}\right)$
$\left(\frac{3x^2}{4x^4y^4}\right)^2$
$-11\cdot13$
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