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dangthuhuyenhy0105
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1): 4x-7=7+2x 2); 5(x-3)-4=2(x-1) 3): 3(x-1)-2(x+3)=-15 4); (2x-10)(25x-15)=0 5); x^2-5x=0 6): 3x(x-3)+4x-12=0 7): x^2(2x-5)-4-20=0 8): x^3-9x=0
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