Question

帮忙接一下，谢啦~！

Answer 1

1. LCM(bd,4b^2) = 4b^2d

   ==> ( 2c / bd ) * 4b= >8bc/4b^2d

            ( 3ac / 4b^2 ) * d=> 3abd/4b^2d  #

2. LCM(2x, 3y^2,4xy  ) = 12 xy^2

   ==>  (y/2x) * 6y^2 => 6y^3/12xy^2

        岁扰    (x/3y^2)*4x=>4x^2/12xy^2

             (1/4xy)*3y=>3y/12xy^2  #

3. LCM( (x+y)^2, x^2-y^2 ) =  (x+y)^2*(x-y)

   ==> { 2xy/ (x+y)^2 } * (x-y) =>   2xy(x-y)/(x+y)^2*(x-y)

                          带雀链                        =  (2x^2y-2xy^2)/    ...    

          { x / (x^2-y^2) } * (x+y) = >(x^2+xy)/......   #

4. LCM( a^2-a,a^2-1,a^2+a ) = a*(a+1)*(a-1)
   

      ==>  a/ (a^2-a) *(a+1) => (a^2+a) / a*(a+1)*(a-1)

               2/(a^2-1) * a =>蠢孙 2a/ a*(a+1)*(a-1)

               -1/(a^2+a)* (a-1)=> (-a+1)/ a*(a+1)*(a-1)

the ends