Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.
4x2 - 3x + 7
4x2 - 3x + 7
This expression is a polynomial in one variable x because in the expression there is only one variable (x) and all the indices of x are whole numbers.
the exponent of t is 
which is not a whole number.
Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.
y2 + 
y2 + 
This expression is a polynomial in one variable y because in the expression there is only one variable (y) and all the indices of y are whole numbers.
x10+ y3 + t50
This expression is not a polynomial in one variable because in the expression, three variables (x, y and t) occur.
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