Question

4x-5x=-1/3ab的平方+ab的平方=4a-5a+8a=-2x+3y+7x-1/2y=5mn-2m+4mn+6m-

Answer 1

1.4x-5x=-x

2.-1/3ab^2+ab^2=2/3ab^2

3.4a-5a+8a=7a

4.-2x+3y+7x-1/2y=5x+5/2y

5.5mn-2m+4mn+6m-2=mn+4m-2

6.剩下的香蕉根数

=N-1/2N-1/3(1-1/2)N

=N-1/2N-1/6N

=1/3N