3x2+2x−8x−23x^2+2x-8x-23x2+2x−8x−2
cot2b+1\cot^2b+1cot2b+1
(1a+2b+3c)2\left(\frac{1}{a+2b+3c}\right)^2(a+2b+3c1)2
64x2−3664x^2-3664x2−36
2x+5−4x+8\frac{2x+5}{-4x+8}−4x+82x+5
(2b3+5)(2b3−5)\left(2b^3+5\right)\left(2b^3-5\right)(2b3+5)(2b3−5)
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