$\left(2d\:-11g\right)\left(11g\:+\:2d\right)$
$9x^2-36y^4$
$2x^2+4x+10=0$
$\frac{sin^2x+tan^2x+2tanx-4+cos^2x}{3tanx\left(tanx-1\right)}$
$4-4\left(1-x\right)\:+\:\left(1-x\right)^2$
$5^x.\lim_{h\to0}\left(\frac{5^h-1}{h}\right)$
$-9\left(-2z-1\right)-9-9\left(-2z-1\right)-9$
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