Question

Find the product of (2x + 5y)^2

A. 4x^2+20xy+25y^
B. 4x^2-20xy+25y^2
C. 4x^2- 25y^2
D. 4x^2+ 25y^2

Answer 1

`(2x+5y)^(2)` is (2x+5y)(2x+5y) so now you use FOIL (First, Outer, Inner, Last) to distribute.


`4x^(2)`+10xy+10xy+
`25y^(2)`
Now combine like terms

`4 x^(2)+20xy+ 25y^(2)`

Hope that helps