Question

Viết dưới dạng đa thức:

a) \(\dfrac{ }{mn}+2m-3n\)

b) \(\left(\dfrac{ }{ab}\right)^2-\dfrac{ }{ab}\)

c) \(\dfrac{ }{abc}-\dfrac{ }{bc}+a\)

Answer 1

a, \(\overline{mn}+2m-3n=10m+n+2m-3n=12m-2n\)

b, \(\left(\overline{ab}\right)^2-\overline{ab}=\left(10a+b\right)^2-10a+b=\left(10a\right)^2+2.10ab+b^2-10a+b=100a^2+20ab+b^2-10a+b\)

c, \(\overline{abc}-\overline{bc}+a=100a+10b+c-\left(10b+c\right)+a=101a\)

Chúc bạn học tốt!!!

Answer 2

Anh Triêt Tuấn Anh Phan Nguyễn Nguyễn Huy Tú Xuân Tuấn Trịnh

Answer 3

a) \(\dfrac{ }{mn}+2m-3n=10m+n+2m-3n=12m-2n\)

b) \(\left(10a+b\right)^2-\dfrac{ }{ab}=100a^2+20ab+b^2-10a-b\)

c) \(100a+10b+c-\left(10b+c\right)+a=101a\)