Question
State whether true/false: The following expression is a polynomial in one variable: $x^{10}+ y^3+ t^{50}$
$a.$ True $b.$ False

Answer

Clearly, the given expression $x^{10}+ y^3+ t^{50}$ contains three variables $x, y, t$ and $t$
Hence, the given expression is not a polynomial in one variable instead in three variables.

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