Question

\(x^2+2xy+y^2-25\)

Answer 1

\(x^2+2xy+y^2-25\)

<=>\(\left(x+y\right)^2-25\)

<=>\(\left(x+y\right)^2-5^2\)

<=>(x+y+5)(x+y-5)

Answer 2

\(x^2+2xy+y^2-25\)

\(=\left(x+y\right)^2-25\)

\(=\left(x+y-5\right)\left(x+y+5\right)\)