$-4x\ge12$
$3^{-5}\cdot3^6$
$\sin^2\left(x\right)=1-\cos^2\left(x\right)$
$10r\:+\:42\:=\:-38$
$\left[3\left(a+b\right)+5\right]\left[3\left(a+b\right)-5\right]$
$\left(x^2-2x+1\right)^2-\left(x^2-2x+2\right)^2+2\left(x-2\right)^2$
$3x-1\ge7-x$
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