$\int\left(x^2+x\right)\cdot\left(4-3x^{-2}-2x^{-3}\right)dx$
$28x^3+19x^2$
$\left(8x\:+\:1\right)^2$
$\sqrt{2\left[\frac{50+k}{2}\right]+4}=8$
$3+8\cdot2$
$8.5\cdot41$
$a^2-36a+64$
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