Question

Which is a polynomial
a] x²+x⁻¹+5
b] x²+√5x+7
c ] 1/x +7
d ]3x² + 7

Answer 1

a) is not a polynomial, because in this exponent of x in second term is -1 which is not a whole number.

b) is a polynomial, because the exponent

of x is whole number.

c) is not a polynomial, because the exponent of x is -1 (1/x = x^-1) in first term which is not a whole number

d) is a polynomial, because the exponent of x is a whole number

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