4a4−16b44a^4-16b^44a4−16b4
sec(x)dy+2dx=4dx\sec\left(x\right)dy+2dx=4dxsec(x)dy+2dx=4dx
81⋅828^1\cdot8^281⋅82
3log(2)−log(x−1)=log(x+1)−log(x−2)3log\left(2\right)-log\left(x-1\right)=log\left(x+1\right)-log\left(x-2\right)3log(2)−log(x−1)=log(x+1)−log(x−2)
cos(x)=2sin(x)cos\left(x\right)=\frac{2}{\sin\left(x\right)}cos(x)=sin(x)2
m2−4mn+4n2m^2-4mn+4n^2m2−4mn+4n2
x2+12x−134x^2+12x-134x2+12x−134
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