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