$2y^2+8y+5$
$\left(2x-6d\right)\left(2x+6d\right)$
$\left(5a-b^2\right)^2$
$-5x^2-5x+100$
$m^2+6m-7=0$
$0.5\left(d-2\right)=-0.2\left(d+19\right)$
$\int_0^2\left(2x+x\right)dx$
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