Thực hiện phép tính: 5 . $4^{15}$ . $9^{9}$ -4. $3^{20}$ . $8^{9}$ / 5. $2^{9}$ . $6^{19}$ – 7. $2^{27}$ . $27^{6}$

1 bình luận về “Thực hiện phép tính: 5 . $4^{15}$ . $9^{9}$ -4. $3^{20}$ . $8^{9}$ / 5. $2^{9}$ . $6^{19}$ – 7. $2^{27}$ . $27^{6}$”

1. A = (5 . 4^15 . 9^9 – 4 . 3^20 . 8^9)/(5 . 2^9 . 16^19 – 7 . 2^29 . 27^6)

   =(5.(2^2)^15 .(3^2)^9 -4.3^20 .(2^3)^9)/(5.2^9 .(2.3)^29 -7.2^29 . (3^3)^6

   =(5.2^30 .3^18 -2^2 .3^20 .2^27)/(5.2^28 .3^19 -6.2^29 .3^18

   =(5.2^30 .3^18 -3^20 .2^29)/(5.2^28 .3^19 -7.2^29 .3^18

   =(2^29 .3^18 .(5.2-3^2))/(2^28 .3^18 .(5.3-2.7)

   =(2^29 . 3^18 .1)/(2^28 .3^18 .1)

   = 2^1

   = 2.

    

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