$\left(5x-2y+9\right)^2-\left(x-8\right)^2$
$4-3+54-20+8-9$
$12-8x+2^2$
$\frac{dy}{dt}+2y=4$
$4x^2-12x+16=0$
$\int_2^{\infty}\left(\frac{2x^2-1}{x^2\left(x-1\right)}\right)dx$
$2g^2-36g=-70$
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