Question

How do you simplify `(3x+2y)^2`?

Answer 1

Easy lets use the algorithm / identity `(a+b)^2 = a^2 + b^2 + 2ab`

So lets identify our terms

`a= 3x`
`b =2y`

So

`therefore (3x+2y)^2= (3x)^2 + (2y)^2 + 2(3x)(2y)`
`=9x^ + 4y^2+ 12xy`