$7m-3\cdot2m+4$
$\frac{6\:\left(\cos\:4x\:-1\right)}{\sin3x\:.\tan4x}$
$\int_0^{2\pi}\left(tcos\left(\frac{1}{2}t\right)\right)dt$
$-4xe3ye2z$
$\left(-3\right)^{2^{2^1}}$
$5x^2-8x+2=0$
$\left(a^{x+1}-2b^{x+1}\right)\left(2b^{x-1}+a^{x+1}\right)$
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