sin2x−sec2x sin2xsin^2x-sec^2x\:sin^2xsin2x−sec2xsin2x
35−3335-3^335−33
4n4 +14n 4 +14n^4\:+14n\:4\:+14n4+14n4+1
−3x2+6x+1=0- 3 x ^ { 2 } + 6 x + 1 = 0−3x2+6x+1=0
a+2a+2b5a+\frac{2a+2b}{5}a+52a+2b
(8m2+9n3)2\left(8m^2+9n^3\right)^2(8m2+9n3)2
20x2+23x−2120x^2+23x-2120x2+23x−21
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