$8w+2w-3w+w-5w+11w$
$\left(9-4m^2\right)^2$
$1-\left(46+-16-9\right)+11$
$4m^2-28m+49$
$\frac{3x^3+5x^2-2x-24}{2x^3-50x}$
$3\left(-4\right)^2-4\left(-4\right)+7$
$csc\:x\:-\:sin\:x\:=\:cos\:\left(-x\right)\:cot\:x\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:$
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