Question

How do you expand `(4x+3y)^2`?

Answer 1

`16x^2+24xy+9y^2`

Explanation:

using formula `(a+b)^2=a^2+2ab+b^2`
Therefore
`(4x+3y)^2=(4x)^2+2(4x)(3y)+(3y)^2`
`16x^2+24xy+9y^2`