(a+b+c−x)(a+b+c)\left(a+b+c-x\right)\left(a+b+c\right)(a+b+c−x)(a+b+c)
(4x+7y)⋅(4x−7y)\left(4x+7y\right)\cdot\left(4x-7y\right)(4x+7y)⋅(4x−7y)
d2+72+49d^2+7^2+49d2+72+49
limx→0((1−ex)2x2)\lim_{x\to0}\left(\frac{\left(1-e^x\right)^2}{x^2}\right)x→0lim(x2(1−ex)2)
(41⋅ 31)2\left(41\cdot\:31\right)^2(41⋅31)2
1+tan2(90∘−θ)1+\tan^{2}\left(90^{\circ}-\theta\right)1+tan2(90∘−θ)
dzdx=−x⋅ez\frac{dz}{dx}=-x\cdot e^zdxdz=−x⋅ez
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