Question

Q:2 Which of the following expressions are polynomials in one variable and which are not?
y+y3- 5
z-4 – 7z
x + 5/x
√t – 5t​

Answer 1

Step-by-step explanation:

See the attachment below

thx

Answer 2

Answer:

y + y3 - 5    is a polynomial in one variable

z - 4 - 7z     is a polynomial in one variable

x + 5/x       is not a polynomial since its power is negative

$\sqrt{t}$ - 5t       is not a polynomial since its power is a fraction