$2\frac{dx}{dt}+3x=e^{-t}$
$1mxy^2-54m^2x^2y^2+36my^2$
$\int7xe^{4x^2}dx$
$3x+4<x+10$
$x+-\sqrt{x}=30$
$\frac{\left(8^5-7x^4-10x^3-6x^2-8x\right)}{\left(x+1\right)}$
$\int\frac{u-1}{-u^2-2u-2}du$
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