Question

[Nguyễn Hương Ly]

  Cho A = 5 x 4¹⁵ x 9⁹ - 4 x 3²⁰ x 8⁹ và B = 5 x 2⁹ x 6¹⁹ - 7 x 2²⁹ x 27⁶  . Tính A : B

Answer 1

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A=5.4¹⁵.9⁹-4.3²⁰.8⁹=5.2³⁰.3¹⁸-2².2²⁷.3²⁰

=2²⁹.3¹⁸(2.5-3²)=2²⁹.3¹⁸

B=5.2⁹.6¹⁹-7.2²⁹.27⁶=5.2⁹.2¹⁹.3¹⁹-7.2²⁹.3¹⁸

=2²⁸.3¹⁸(5.3-7.2)=2²⁸.3¹⁸

=>A:B=2²⁹.3¹⁸:2²⁸:3¹⁸=2

Answer 2

[Le Thuy Dung]

thank you nguyen thieu cong thanh