limx→−8(7x2+21xx+8)\lim_{x\to-8}\left(\frac{7x^2+21x}{x+8}\right)x→−8lim(x+87x2+21x)
∫2x2⋅cos(x3−2)dx\int2x^2\cdot\cos\left(x^3-2\right)dx∫2x2⋅cos(x3−2)dx
ln(4x3−2)(6x2−2)\ln\left(4x^3-2\right)\left(6x^2-2\right)ln(4x3−2)(6x2−2)
sin(270−x)\sin\left(270-x\right)sin(270−x)
(u−4v3)0⋅2u−1v2\left(u^{-4}v^3\right)^0\cdot2u^{-1}v^2(u−4v3)0⋅2u−1v2
2x2+8x−15=02x^2+8x-15=02x2+8x−15=0
(5d−m)2\left(5d-m\right)^2(5d−m)2
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