$\lim_{x\to-\infty}\frac{2x^4-4x+1}{3-x^2}$
$\sqrt{16}-\sqrt{49}$
$70-x<11x+10$
$5x+25x^2y$
$\left(3x-4y\right)+\left(2x-y\right)y'=0$
$\frac{1}{8}=x^{-.68966}$
$\left(x^3+3x^2+7\right)\left(x-2\right)$
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