$8-7n>-20$
$8a\left(2+c\right)^2$
$\cos^2\left(x\right)=1-.616^2$
$7x^4+5x^3-43x^2+13x-6$
$\int x^fdx$
$2cos^2x-8=-6$
$a^2\:+ab\:-\:\left(ab\:+b^2\:\right)\:-\:\left(ab\:-b^2\right)$
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