difference between twice the sum of x and y and the sum of twice x and y

Question

anonymous · Answer

i know that is 2 (x+ Y) and the other 2x+2y) but i have to explain it in sentences

mathstudent55 · Answer

twice the sum of x and y: 2(x + y)
the sum of twice x and y: 2x + y
difference: 2(x + y) - (2x + y)
now simplify

mathstudent55 · Answer

It's not exactly as you wrote it

mathstudent55 · Answer

Twice the sum of x and y means to add x and y and then multiply by 2.
The sum of twice x and y means to multiply x by 2 and then add y.
After those two steps, subtract the second one from the first one.

anonymous · Answer

thanks

skullpatrol · Answer

difference between twice the sum of x and y and the sum of twice x and y 

difference between [ {twice (the sum of x and y)} and {the sum of (twice x) and y} ]

skullpatrol · Answer

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