$7x^2y\cdot6x^4-10x^2y^2+11y^4$
$\frac{dy}{dx}=\:2x+7$
$0.94-0.27$
$-2x<16$
$2-1\left(3+x\right)=5$
$\frac{x+1}{2x+2}=\frac{3}{2x}$
$4\left(3x+2\right)=4\left(2x+3\right)+4x$
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