Đáp án+Giải thích các bước giải:
`a) (6^2007 - 6^2006) : 6^2006`
`= 6^2007 : 6^2006 - 6^2006 : 6^2006`
`= 6 - 1`
`= 5`
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`b) (5^2001 - 5^2000) : 5^2000`
`= 5^2001 : 5^2000 - 5^2000 : 5^2000`
`= 5 - 1`
`= 4`
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`c) (7^2005 + 7^2004) : 7^2004`
`= 7^2005 : 7^2004 - 7^2004 : 7^2004`
`= 7 + 1`
`= 8`
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`d) (5^7 + 7^5) . (6^8 + 8^6) . (2^4 - 4^2)`
`= (5^7 + 7^5) . (6^8 + 8^6) . (16 - 16)`
`= (5^7 + 7^5) . (6^8 + 8^6) . 0`
`= 0`
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`e) (7^5 + 7^5) . (5^4 + 5^6) . (3^3. 3 - 9^2)`
`= (7^5 + 7^5) . (5^4 + 5^6) . (3^4 - 9^2)`
`= (7^5 + 7^5) . (5^4 + 5^6) . (81 - 81)`
`= (7^5 + 7^5) . (5^4 + 5^6) . 0`
`= 0`