y2+8−6y=0y^2+8-6y=0y2+8−6y=0
flimx→0.9(4x−x−3x−1)f\lim_{x\to0.9}\left(\frac{4x-x-3}{x-1}\right)fx→0.9lim(x−14x−x−3)
sec2(x)−3tan(x)−3sec^2\left(x\right)-3tan\left(x\right)-3sec2(x)−3tan(x)−3
s2−4s−12=0s^2-4s-12=0s2−4s−12=0
9⋅3+24⋅3+489\cdot3+24\cdot3+489⋅3+24⋅3+48
9x2−18x+10=09x^2-18x+10=09x2−18x+10=0
4x2−18x+134x^2-18x+134x2−18x+13
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