Which expression equals x2−y2x^2 - y^2x2−y2 when x−y=5x - y = 5x−y=5 and x+y=7x + y = 7x+y=7?A121212B353535check_circleC222D242424Explanationx2−y2=(x−y)(x+y)=5⋅7=35x^2 - y^2 = (x-y)(x+y) = 5 \cdot 7 = 35x2−y2=(x−y)(x+y)=5⋅7=35.