$\sin\left(4x\right)=4\sin\left(x\right)\cos\left(x\right)-8\left(\sin\left(x\right)\right)^3\cos\left(x\right)$
$\lim_{x\to\infty}\left(\frac{2x}{x-2}\right)$
$3x^2y+6xy$
$5x-7>8$
$\left(9+-17\right)\cdot\left(-5+8\right)-\left(-1+1\right)$
$\left(-2\right)\cdot\left(-2\right)^2\cdot\left(-2\right)^4$
$l\frac{di}{dt}=v-ri$
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