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Question
Following expression is polynomial in one variable or not? State reason for your answer.
x10 + y3 + t50
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Solution
We have x10 + y3 + t50
Here, the exponent of every variable is a whole number, but x10 + y3 + t50 is a polynomial in x, y and t, i.e., in three variables. So, it is not a polynomial in one variable.
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