$45\:+\:5\:x\:5\:-\:100$
$m=\left(x-2\right)\left(x+2\right)\left(x^2+4\right)-x^4$
$16-8-\left(2+10\right)-\left(12-2-8\right)$
$\cos^2\left(14x\right)-\sin^2\left(14x\right)$
$\left(3x^2+4y^5\right)^2$
$-3\left(4+5\right)-\left(13+20\right)\left(+13\right)$
$\log\left(5.4\right)=\log5+\log4$
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