Question

expand (2 X + 3 Y + 5 )x (2 X + 3 Y - 5)

Answer 1

here is your answer

Answer 2

$\huge\green{Answer\: is}$

$(2x + 3y + 5) \times (2x + 3y - 5) \\ = (2x + 3y) {}^{2} - 5 {}^{2} \\ = 4x {}^{2} + 9y {}^{2} + 12xy - 25$
Hope it helps you