Toán Lớp 6: A=3 mũ . 11 + 3 mũ 10 . 5
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3 mũ 9 . 2 mũ 4
B= 2 mũ 10 . 13 + 2 mũ 10 . 65
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3 mũ 9 . 2 mũ 4
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Toán Lớp 6: A=3 mũ . 11 + 3 mũ 10 . 5
___________________________
3 mũ 9 . 2 mũ 4
B= 2 mũ 10 . 13 + 2 mũ 10 . 65
______________________________
3 mũ 9 . 2 mũ 4
Comments ( 2 )
A = \dfrac{{{3^{10}}.11 + {3^{10}}.5}}{{{3^9}{{.2}^4}}}\\
= \dfrac{{{3^{10}}\left( {11 + 5} \right)}}{{{3^9}.16}}\\
= \dfrac{{{3^1}.16}}{{16}}\\
= 3\\
B = \dfrac{{{2^{10}}.13 + {2^{10}}.65}}{{{3^9}{{.2}^4}}}\\
= \dfrac{{{2^{10}}.\left( {13 + 65} \right)}}{{{3^9}{{.2}^4}}}\\
= \dfrac{{{2^6}.78}}{{{3^9}}}\\
= \dfrac{{{2^6}.2.3.13}}{{{3^9}}}\\
= \dfrac{{{2^7}.13}}{{{3^8}}}
\end{array}$