$1\:-3\:4\:3\:5\:$
$250+14.8+3.95$
$\left(3x+2y+5z\right)\:\left(3x+7y\right)$
$\frac{x^4-5x^2+4}{x+5}$
$7^4\cdot7^{-4}$
$\csc\left(x\right)\frac{1}{\cot\left(x\right)+\tan\left(x\right)}=\cos\left(x\right)$
$-3\left(-c-12\right)=-3c-12$
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