Question

which of the following expressions are polynomials in one variable and which not? state reasons for your answer
1.4x2-3x+7
2.y²+√2
3.3√t+t√2
4.y+2/y
5.x¹°+y³+t⁴°

Answer 1

the first 4 polynomials are in one variable
and the last is in three variables because first four have only one variable that is only one alphabet and last have 3...