Question

4^5 nhân 9^4 - 2 nhân 6^9

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2^10 nhân 3^8 + 6^8 nhân 20

 

 

Answer 1

\(\dfrac{4^{^5}.9^{^4}-2.6^{^9}}{2^{^{10}}.3^{^8}+6^{^8}.20}\)=\(\dfrac{2^{^{10}}.3^{^8}-2.2^{^9}.3^{^9}}{2^{^{10}}.3^{^8}+2^{^8}.3^{^8}.2^{^2}.5}\)=\(\dfrac{2^{^{10}}.3^{^8}-2^{^{10}}.3^{^9}}{2^{^{10}}.3^{^8}+2^{^{10}}.3^{^8}.5}\)=\(\dfrac{2^{^{10}}.3^{^8}\left(1-3\right)}{2^{^{10}}.3^{^8}\left(1+5\right)}\)=\(\dfrac{1-3}{1+5}\)=\(\dfrac{1}{3}\)

Answer 2

210.38−2.29.39210.38+28.38.22.5210.38−2.29.39210.38+28.38.22.5=210.38(1−3)210.38(1+5)210.38(1−3)210.38(1+5)=13