Toán Lớp 7: 15^5*3^5/5^5*6^5. GIÚP EM NHA.
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Toán Lớp 7: 15^5*3^5/5^5*6^5. GIÚP EM NHA.
Comments ( 2 )
{15^5. 3^5}/{5^5. 6^5}
= {5^5. 3^5. 3^5}/{5^5. 3^5. 2^5}
= 3^5/2^5
= 243/32
Answer
{15^5 xx 3^5}/{5^5 xx 6^5}
= {(3 . 5)^5 xx 3^5}/{5^5 xx (2 . 3)^5}
= {3^5 . 5^5 xx 3^5}/{5^5 xx 2^5 . 3^5}
= {1 xx 1 xx 3^5}/{1 xx 2^5 xx 1}
= 243/32