$7x+4=8x-2$
$8a^3+32a^2+6a+24+4a^2+16a-3a-12$
$\frac{2x^2-x-1}{x^2-1}$
$2^x=64$
$y'-x^{-\frac{2}{3}}y^{\frac{2}{3}}=0$
$\left(v^2w^3-v^5\right)^2$
$\frac{x+3}{x^2+x-6}$
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