For the expression 5xx2−4x\dfrac{5x}{x^2 - 4x}x2−4x5x, what are the excluded values?
x=0x = 0x=0 and x=4x = 4x=4
x=4x = 4x=4 only
x=0x = 0x=0 only
x=±2x = \pm 2x=±2