$\int7\left(cos\left(4x\right)\right)^3dx$
$x^3-7x^2-14x+48$
$2x+3=-x$
$6^{-2}\cdot6^5$
$2\cdot y-200=42$
$\int\left(e^{\frac{5}{2}}\:x^{-2}\right)dx$
$a^2+b^2-2b^2-3a^2-a^2+7b^2$
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