(2x3+3x2)⋅ (2x−1)−(5x4+3x2)\left(2x^3+3x^2\right)\cdot\:\left(2x-1\right)-\left(5x^4+3x^2\right)(2x3+3x2)⋅(2x−1)−(5x4+3x2)
limx→π2(1−cos(x)−1+cos(x)cot(x))\lim_{x\to\frac{\pi}{2}}\left(\frac{\sqrt{1-\cos\left(x\right)}-\sqrt{1+\cos\left(x\right)}}{\sqrt{\cot\left(x\right)}}\right)x→2πlim(cot(x)1−cos(x)−1+cos(x))
limx→1(x1x2−1)\lim_{x\to1}\left(x^{\frac{1}{x^2-1}}\right)x→1lim(xx2−11)
7 (1 − 23) + 5 (− 9 + 2 ) − (8 + 6 )\:\:\:\:7\:\left(1\:-\:23\right)\:+\:5\:\left(-\:9\:+\:2\:\right)\:-\:\left(8\:+\:6\:\right)7(1−23)+5(−9+2)−(8+6)
x2−5x+25=0x^2-5x+25=0x2−5x+25=0
3x2−13x−103x^2-13x-103x2−13x−10
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