$-7c^2b+c^2b+3cb^2$
$x^2\:+\:x^3\cdot ln\left(\frac{2x-1}{2x+1}\right)$
$y=\frac{\left(4x^2+x^3\right)}{sqrt\left(x^4+2\right)}$
$\frac{1}{1+\frac{1}{1-x}}-x=-1$
$\left(5x^2+2x-6\right)\left(2x-4\right)$
$\frac{5}{7}=\frac{75}{x}$
$5m^2-23m+12$
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