$\lim_{x\to-3}\sqrt{\frac{5+2x}{5-x}}$
$y^5+4y^3=0$
$\:\left(y-\frac{1}{3}\right)^2$
$8ab^3\:+\:8a^3b$
$5+19\cdot2$
$x^4-6x^2+9$
$\left(\frac{5x}{3}+4\right)^3$
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