$3x-5=x+7$
$5\cdot\frac{dy}{dt}+y=25t$
$\int_0^{\frac{2}{9}}\left(x^2\sqrt{4-81x^2}\right)dx$
$\left(a^{2}+2a\right)^{2}-2\left(a^{2}+2a\right)-3$
$4\left(4m-9\right)-3m$
$7d+4d$
$18y^2+24$
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