$20y^2-y-1$
$0\:-8\:-\:-6\:+12\:-6\:+\:-2\:-\:-15\:-6$
$\int\left(y^2\right)\sqrt{9-4y^2}dy$
$14x^4-14x^3+42x^2+7x$
$2cos^2\theta\:+cos\theta\:=0$
$\int x\:cos\left(5x\right)\:dx$
$80\cdot70$
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