Question

(2x – 3y + 5) (2x – 3y – 5) simplify this ​

Answer 1

this is your answer

4x2 +9y2-6xy-25

Answer 2

$(2x - 3y + 5)(2x - 3y - 5) \\ = 2x(2x - 3y - 5) - 3y(2x - 3y - 5) + 5(2x - 3y - 5) \\ = 4 {x}^{2} - 6xy - 10x - 6xy + {9y}^{2} + 15y + 10x - 15y - 25\\ = 4 {x}^{2} + 9 {y}^{2} - 12xy - 25$