$=4senxcosx$
$\int\frac{\arcsin\left(\:x\right)}{\sqrt{1-x^2}}dx$
$85x^3+2x^2+42x+10x^2+3+5x^3+21x+150$
$2ab\left(3\right)\left(-7\right)$
$6x+80y+30w-100z-20$
$\left(1+\sin x\right)\left(1-\sin x\right)=\frac{1}{\csc^2x}$
$\int_0^1\left(x^2+4\right)e^xdx$
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