$\int_0^{\infty}\left(\frac{1}{1+x^2}-\frac{1}{3x+1}\right)dx$
$2a-3b+4c\left(-\frac{3}{2}\right)$
$y'+y=x^2$
$6b+b$
$5\:.\:\left(-7\right)$
$35-12x-4x\left(35\right)+3x^2\left(35\right)-x^3\left(35\right)+4x^2-3x^3+x^4$
$x^2-18x+144$
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