−3(2+4k)+7(2k−1)- 3 ( 2 + 4 k ) + 7 ( 2 k - 1 )−3(2+4k)+7(2k−1)
x+y+2xyx+y+2\sqrt{xy}x+y+2xy
162n\frac{16^2}{n}n162
limx→0∣2sin8xx∣\lim_{x\to0}\left|\frac{2\sin8x}{x}\right|x→0lim∣∣x2sin8x∣∣
log4 (5x−1)=3\log4\:\left(5x-1\right)=3log4(5x−1)=3
9x−11y−x−6y+4z−6z9x-11y-x-6y+4z-6z9x−11y−x−6y+4z−6z
m2+2m+1m^2+2m+1m2+2m+1
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