M=5.4^15.9^9-4.3^20.8^9 _______________________ 5.2^9.6^19-7.2^29.27^6 22/07/2021 Bởi Anna M=5.4^15.9^9-4.3^20.8^9 _______________________ 5.2^9.6^19-7.2^29.27^6
Đáp án: Giải thích các bước giải: $M=\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}$ $M=\dfrac{5.(2^2)^{15}.(3^2)^9-2^2.3^{20}-(2^3)^9}{5.2^9.2^{19}.3^{19}-7.2^{29}.(3^3)^6}$ $M=\dfrac{5.2^{30}.3^{18}-2^2.2^{27}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}$ $M=\dfrac{2^{29}.3^{18}.(5.2-3^2)}{2^{28}.3^{18}.(5.3-7.2)}$ $M=\dfrac{2.(10-9)}{15-14}$ $M=\dfrac{2.1}{1}$ $M=2$ Vậy $M=2$ Ah xin hay nhất nhé. Bình luận
Đáp án: Giải thích các bước giải: `M=(5*4^15*9^9-4*3^20*8^9)/(5*2^9*6^19-7*2^29*27^6)` `=(5*(2^2)^15*(3^2)^9-2^2*3^20*(2^3)^9)/(5*2^9*(2*3)^19-7*2^29*(3^3)^6)` `=(5*2^30*3^18-2^2*3^20*2^27)/(5*2^9*2^19*3^19-7*2^29*3^18)` `=(5*2^30*3^18-2^29*3^20)/(5*2^28*3^19-7*2^29*3^18)` `=(2^29*3^18*(5*2-3^2))/(2^28*3^18*(5*3-7*2))=(2^29*3^18*1)/(2^28*3^18*1)=2` Bình luận
Đáp án:
Giải thích các bước giải:
$M=\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}$
$M=\dfrac{5.(2^2)^{15}.(3^2)^9-2^2.3^{20}-(2^3)^9}{5.2^9.2^{19}.3^{19}-7.2^{29}.(3^3)^6}$
$M=\dfrac{5.2^{30}.3^{18}-2^2.2^{27}.3^{20}}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}$
$M=\dfrac{2^{29}.3^{18}.(5.2-3^2)}{2^{28}.3^{18}.(5.3-7.2)}$
$M=\dfrac{2.(10-9)}{15-14}$
$M=\dfrac{2.1}{1}$
$M=2$
Vậy $M=2$
Ah xin hay nhất nhé.
Đáp án:
Giải thích các bước giải:
`M=(5*4^15*9^9-4*3^20*8^9)/(5*2^9*6^19-7*2^29*27^6)`
`=(5*(2^2)^15*(3^2)^9-2^2*3^20*(2^3)^9)/(5*2^9*(2*3)^19-7*2^29*(3^3)^6)`
`=(5*2^30*3^18-2^2*3^20*2^27)/(5*2^9*2^19*3^19-7*2^29*3^18)`
`=(5*2^30*3^18-2^29*3^20)/(5*2^28*3^19-7*2^29*3^18)`
`=(2^29*3^18*(5*2-3^2))/(2^28*3^18*(5*3-7*2))=(2^29*3^18*1)/(2^28*3^18*1)=2`