$2x\ln\left(8x\right)-2x$
$4x+31+2x+1$
$\left(\frac{2}{3}x^3y^2+3m\right)\left(\frac{2}{3}x^3y^2-3m\right)$
$+12\cdot7-13$
$-8\cdot4+\left(-5\right)\cdot\left(-6\right)$
$\lim_{x\to-1}\frac{x^4-2x^3+x^2}{x+1}$
$z^2-24z=-144$
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