$\left(x+1\right)\left(x-1\right)-\left(x+1\right)^2+\left(x-1\right)^2$
$b^2+76+10$
$\frac{3-x}{5}-1\ge\frac{2x+3}{2}$
$2cos\left(2x+1\right)\:+\:sin\left(x-1\right)$
$64a^6-100b^2$
$\left(x^2+16\right)\left(x-3\right)\left(x+4\right)$
$205\cdot3$
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