$12x-4-9x^2=9$
$y'+xy=e^xy$
$80a^2^n-5$
$3x^3-7x^2+2x-12\:\:-\:10x^3-6x^2-2x-8$
$\frac{sinxcos^2x+sin^3x}{sin^2x}=cscx$
$\:\:-132-12-45$
$y^2=36x$
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