$\frac{\left(2sin^2\left(x\right)-1\right)^2}{sin^4\left(x\right)-cos^4\left(x\right)}$
$\lim_{x\to3}\frac{x^2-1}{x^2-3x+2}$
$\frac{1}{2e^{-\infty^2}}$
$12x^2y+24x^3y^2-36x^2y^3+48x^{5\:}y^4$
$\left(x^5-4\right)\left(x^5-11\right)$
$2\:csc\:a-4=0$
$y2+3y+12+4y$
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