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chuyn khai trin hai rightarrow dng viet tra nghim

Chuyn khai trin hai rightarrow dng viet tra nghim

Ta có:

(2x−5)3+(2−x)3=(x−3)3+(x−3) (7x2−2052x+2054).(2x-5)^3+(2-x)^3=(x-3)^3+(x-3)\,(7x^2-2052x+2054).

−x3+2028x2−8099x+6072=−(x−1)(x−3)(x−2024)=0.-x^3+2028x^2-8099x+6072=-(x-1)(x-3)(x-2024)=0.

Suy ra các nghiệm của phương trình là:

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