计算:(1)(2m²n^-2)²*3m^-3n^3(2)若3^m=4,3^n=2,试求:3^2m-4n+2的值(3)先化简,再求值:2/(a-1)+(a^2-4a+4)/a^2-1×(a+1)/(a-2),其中,a=根号2+1
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计算:(1)(2m²n^-2)²*3m^-3n^3(2)若3^m=4,3^n=2,试求:3^2m-4n+2的值(3)先化简,再求值:2/(a-1)+(a^2-4a+4)/a^2-1×(a+1)/(a-2),其中,a=根号2+1
计算:(1)(2m²n^-2)²*3m^-3n^3
(2)若3^m=4,3^n=2,试求:3^2m-4n+2的值
(3)先化简,再求值:2/(a-1)+(a^2-4a+4)/a^2-1×(a+1)/(a-2),其中,a=根号2+1
计算:(1)(2m²n^-2)²*3m^-3n^3(2)若3^m=4,3^n=2,试求:3^2m-4n+2的值(3)先化简,再求值:2/(a-1)+(a^2-4a+4)/a^2-1×(a+1)/(a-2),其中,a=根号2+1