$a^2x^2-3bx^2+a^2y^2-3by2$
$2x-8>4x$
$11x^2-11b^2$
$-x^2+2x+9<5$
$\left(5x\right)\left(x^2y\right)$
$\frac{3x-9}{x^2-8}$
$3<2\cdot\left(x-\frac{1}{2}\right)$
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