$\lim_{x\to1}\left(1-\sqrt{\frac{x-5}{x+5}}\right)$
$\frac{x^3+x^2-1}{x-1}$
$4+1$
$\left(x+y+32\right)^2$
$\left(\frac{11}{4}m^2+\frac{5}{2}n\right)^2$
$\frac { ( x + 2 ) ^ { 3 } } { x + 2 }$
$cos^2\left(\frac{x}{2}\right)=\left(1+cos\left(x\right)\right)$
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