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nguyennguyen20042001
2 năm trước
7. (6x−2)2+(5x−2)2−4(3x−1)(5x−2)=0 3. x2−2x=24 8. (x−2)3−x2(x−6)=4 4. (x+4)2−(x+1)(x−1)=16 9. (x−1)(x2+x+1)−x(x+2)(x−2)=5 5. (2x−1)2+(x+3)2−5(x+7)(x−7)=0 10.
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