$9y^2-30x^2y+25x^4$
$2x^3+8x+8$
$\left(2x+4y\right)^3\:\:$
$\lim_{x\to0}\left(x\cdot lv\left(senx\right)\right)$
$2\left(sinx\right)^2-sinx=1$
$\left(4-x^3\right)^2$
$y^{\prime}=\frac{x\sqrt{x^{2}-1}}{y}$
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