79+153.679+153.679+153.6
limx→−∞(4x2+5x+6−4x2+x+3)\lim_{x\to-\infty}\left(\sqrt{4x^2+5x+6}-\sqrt{4x^2+x+3}\right)x→−∞lim(4x2+5x+6−4x2+x+3)
12+(8−15)−(5+8)12+\left(8-15\right)-\left(5+8\right)12+(8−15)−(5+8)
limx→1(xa−1)\lim_{x\to1}\left(x^a-1\right)x→1lim(xa−1)
4x+2y=2724x+2y=2724x+2y=272
10+(−8)+9(−13)10+\left(-8\right)+9\left(-13\right)10+(−8)+9(−13)
limx→5(2xx−7)\lim_{x\to5}\left(\frac{2x}{x-7}\right)x→5lim(x−72x)
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