a, 4y. (y-1)-3.(y^2-5)-y^2=y-3-(y+4) b, 3.(2y-1).(3y-1)-(2y-3).(9y-1)=0 c, (2y+7).(3y-1)-(6y-5).(y+1)=y+2-(y-5) d, (12y-5).(4y-1)+(3y-7).(1-16y) =81 G

Bởi

a, 4y. (y-1)-3.(y^2-5)-y^2=y-3-(y+4)
b, 3.(2y-1).(3y-1)-(2y-3).(9y-1)=0
c, (2y+7).(3y-1)-(6y-5).(y+1)=y+2-(y-5)
d, (12y-5).(4y-1)+(3y-7).(1-16y) =81
GIÚP MK NHA MK ĐANG RẤT CẦN

0 bình luận về “a, 4y. (y-1)-3.(y^2-5)-y^2=y-3-(y+4) b, 3.(2y-1).(3y-1)-(2y-3).(9y-1)=0 c, (2y+7).(3y-1)-(6y-5).(y+1)=y+2-(y-5) d, (12y-5).(4y-1)+(3y-7).(1-16y) =81 G”

  2. d) (12y-5).(4y-1)+(3y-7).(1-16y)=81

    48y²-12y-20y+5+3y-48y²-7+112y=81

    -48y²+83=81

    -48y²      =-2

         y²       =24

         y         =√24

    Bình luận

Viết một bình luận