8a + 9a + 6a8a\:+\:9a\:+\:6a8a+9a+6a
−6⋅1-6\cdot1−6⋅1
9(−3+15)9\left(-3+15\right)9(−3+15)
x4−4x3+3x2+4x−4x−1\frac{x^4-4x^3+3x^2+4x-4}{x-1}x−1x4−4x3+3x2+4x−4
limx,y→0,0(xy2x2+y4)\lim_{x,y\to0,0}\left(\frac{xy^2}{x^2+y^4}\right)x,y→0,0lim(x2+y4xy2)
e4x+1e2x−1\frac { e ^ { 4 x + 1 } } { e ^ { 2 x - 1 } }e2x−1e4x+1
2x−3>92x-3>92x−3>9
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