Which mathematical statement is correct?
a.(2x-y) (3x-y) =6x to the power of 2 -5xy + y squared
b.(4x-5) (4x-5) = 16x squared -40x + 25
c.(3x-4) (2x+7) = 6x squared -13x -28
d.(2x+5)to the power of two =4x squared + 20x +25
plsss answer guizz I need the answer now