$a^2-14ab+49b^2$
$4\sin^2\left(x\right)+2\sin\left(x\right)=4$
$x^2-11x-2\:$
$\frac{1}{\sin\left(x\right)+1}-\frac{1}{\sin\left(x\right)-1}=2\sec\:^2\left(x\right)$
$\left(\left[\frac{4}{3}\right]x^{1-y}-8y^{8-x}\right)^3$
$\left(7a+3c\right)\left(7a-3c\right)$
$\left(10\cdot100\cdot1000\right)$
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