$\left(x^3-27\right)\left(x^3+27\right)$
$r^2+7r+8$
$6\sin^2\left(x\right)-7\cos\left(x\right)-1=0$
$875x<415$
$0\cdot16$
$25\:x\:\frac{5}{6}$
$\left(x+3\right)\left(x-2\right)=6$
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