$y^2-4x^2+32x-68=0$
$\frac{x^{2}+2x-1}{2x^{3}+3x^{2}-2x}$
$\lim_{x\to+\infty}\left(\frac{x+1}{2x-3}\right)^{\frac{x^2+2}{x-1}}$
$\int_2^{3b}2xdx$
$\lim_{x\to\infty}x^{\left(\frac{5}{x}\right)}$
$4k^2+4k=5$
$\int\left(\frac{6x}{x^2+5}\right)dx$
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