$\int\frac{1}{u^2-a^2}du$
$\frac{dy}{dx}=\frac{x^9}{9y^2}$
$-x+4<3x-11$
$2x^2-3x+4\:-1x^2+6x$
$30x^2-29x+4$
$\frac{\left(a+b\right)^3-\left(a-b\right)^3}{3ab^2+b^2}$
$\frac{1}{\sec\left(x\right).\tan\left(x\right)}$
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