已知(0.25-m)^2+|n+4|=0,则m^2013×n^2014的值为( )
问题描述:
已知(0.25-m)^2+|n+4|=0,则m^2013×n^2014的值为( )
答
(0.25-m)^2+|n+4|=0 0.25 -m =0 ; m=0.25 =1/4 n+4 =0 ; n=-4 则:m^2013×n^2014 = ( 1/4) ^2013 ×(-4)^2014 = 4 ^(-2013) ×4^2014 = 4 ^(-2013+2014) =4 ^1 = 4