Archive
21st of March 2017
Mathematics
Q:

Solve: 5(3x+y) square + 6(3x+y) -8

Nisha_vini29 - CBSE - Class IX

Tuesday, March 21, 2017 at 17:50:PM

A:

begin mathsize 16px style 5 left parenthesis 3 straight x plus straight y right parenthesis squared space plus space 6 left parenthesis 3 straight x plus straight y right parenthesis space minus 8
Put space 3 straight x plus straight y equals straight m
5 straight m squared plus 6 straight m minus 8
5 straight m squared plus 10 straight m minus 4 straight m minus 8
5 straight m open parentheses straight m plus 2 close parentheses minus 2 open parentheses straight m plus 2 close parentheses
open parentheses straight m plus 2 close parentheses open parentheses 5 straight m minus 2 close parentheses
As comma
3 straight x plus straight y equals straight m
straight m plus 2 equals 3 straight x plus straight y plus 2 space and space 5 straight m minus 2 equals 5 left parenthesis 3 straight x plus straight y right parenthesis minus 2 equals 15 straight x plus 5 straight y minus 2
end style

Tuesday, March 21, 2017 at 17:56:PM