$\left(4x-2\right)x\left(8x+8\right)$
$-31>b-11$
$\left(+1\right)\:\left(-1\right)\:\left(-1\right)\:\left(1\right)\:\left(-1\right)$
$sin\left(\frac{\pi}{2}-x\right)=sin\left(\frac{\pi}{2}+x\:\right)$
$\left(a\:-\:4\right)\left(a\:-4\right)$
$x-\:4x^3\:+7x^2+\:10x^4\:$
$\sqrt{5.45}$
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