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·÷±±zeto±±÷·(thekiller993) gaming history,personal info,screenshots and more about·÷±±zeto±±...Nickname:·÷±±zeto±±÷·24Members Nickname:·÷±±zeto±±÷·... |
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①若ax^3m·y^12÷3x?y^2n=4x^6·y^8,则(2m+n-a)^-n的值是()... ③若式子a-3a+1=0,则a+1÷a的值是()。解:1、ax^3m·y^12÷3xy^2n=4x^6·y^8 即 a/12·x^(3m-3-6)·y^(12-2n-8)=1 要使其恒成立,可知 a/12=1,3m-3=0,4-2n=0,...?·?ò′ò?ì??°×??1??÷?·èy2??ú??à??1í?áì???÷?... </p><p align=center><img alt="?·?ò′ò?ì??°×??1??÷?·èy2??ú??à??1í?áì???÷?y"src="http://www_php168_com/tmp_... |