What are the excluded values of fracx+1x2+x\\frac{x + 1}{x^2 + x}fracx+1x2+x?
x=0x = 0x=0 only
x=0x = 0x=0 and x=−1x = -1x=−1
x=1x = 1x=1
x=−1x = -1x=−1 only