Question

multiply and simplify: [(x+3)+5y][(x+3)-5y]

Answer 1

\[(a+b)(a-b)=a^2-b^2\] with
\(a=(x+3)\) and \(b=5y\)

Answer 2

(x+3)^2 -25y?

Answer 3

No what is the square of 5y??

Answer 4

5y^2?

Answer 5

No again check your answer...