$x^4-4x^2+8$
$\int3x^4e^{2x+2}dx$
$x^2+2x\le x+6$
$\left(2y^2+4x^2\right)dx+\left(-xy\right)dy=0$
$9x^2-12x+5$
$m+3=0$
$\int_1^3\frac{1}{\left(x-1\right)^2}dx$
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