Question

14道初一数学题40.(1-3m)/2-(2m+5)/3+(3+2m)/441.2/3(x-y)^(2n+1)*9/4(

Answer 1

40

(1-3m)/2-(2m+5)/3+(3+2m)/4

=1/2-5/3+3/4+(-3/2-2/3+2/4)m

=-5/12-5m/3

41

2/3(x-y)^(2n+1)*9/4(x-y)^(2n+1)*7/15(x-y)^4n

=2/3*9/4*7/15*(x-y)^(2n+1+2n+1+4n)

=7/10(x-y)^...