x+2x+y+2y nhóm hạng tử Question x+2x+y+2y nhóm hạng tử in progress 0 Môn Toán Delwyn 4 years 2020-11-11T14:19:59+00:00 2020-11-11T14:19:59+00:00 2 Answers 60 views 0
Answers ( )
`x+2x+y+2y`
`=(x+y)+(2x+2y)`
`=(x+y)+2(x+y)`
`=(x+y)(1+2)`
`=3(x+y)`
Đáp án:
`x+2x+y+2y = (x+2x)+ (y+2y)`
`= x(1 +2 ) + y ( 1 +2)`
`= x.3 + y .3`
`= 3 ( x+y)`