$\int\:\cos\left(4x\right)\cos\left(2x\right)dx$
$2x-3=\left(\frac{1}{2}\right)\left(x-3\right)$
$3x^2-3x+8=0$
$\int4\left(9-12x\right)^5dx$
$4x^2y-3y+1=x^3$
$\left(-19\right)\:+\:\left(-100\right)\:-\:\left(-59\right)\:+\:29$
$\int\cos\left(1+n\right)xdx$
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