Question

Explain in your own words why (x + y)2 ≠ x2 + y2. Provide a numerical example to illustrate

Answer 1

(x+y)^2 = (x+y)(x+y) = x*x +x*y +y*x +y*y = x^2 + 2xy +y^2 so what not equal
x^2 +y^2

hope helped