If you would like to factor the expression 15x^2 - 16xy + 4y^2, you can do this using the following steps:
15x^2 - 16xy + 4y^2 = (5x - 2y) (3x - 2y) = 5x 3x - 5x 2y - 2y 3x + 2y 2y = 15x^2 - 10xy - 6xy + 4y^2 = 15x^2 - 16xy + 4y^2
The correct result would be b. (5x - 2y) (3x - 2y).
