x squared y two strokes of the second (2nd) order minus 4xy stroke first (1st) order plus 4y equally 4x squared minus 6x cubed
x to the power of two y two strokes of the second (2nd) order minus 4xy stroke first (1st) order plus 4y equally 4x squared minus 6x to the power of three
x2y''-4xy'+4y=4x2-6x3
x²y''-4xy'+4y=4x²-6x³
x to the power of 2y''-4xy'+4y=4x to the power of 2-6x to the power of 3