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nplinhh0910
2 năm trước
a)2x+1/2x-1-2x-1/2x+1=8/4x^2-1 b)3/2x-16+3x-20/x-8+1/8=13x-102/3x-24 c)6/x^2-1+5=8x-1/4x+4-12x-1/4-4x d)1/x+3+8/(x+1)(x-3)=x+3/x^2-2x-3
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