Question

Which expressions are polynomials?

Select each correct answer.

Responses

4x+x√−1
4 x plus square root x end root minus 1

7x7−x−5
7 x begin exponent 7 end exponent minus x begin exponent negative 5 end exponent

35x²
35, x, ²

x5+2

Answer 1

hey, @angie -- learn how to type polynomials, ok?

4x + √x - 1 -- no
7x^7 − x − 5 -- yes
35x^2 -- no
x^5 + 2x - 3 -- yes

the spaces aren't really necessary, but they can help increase readability

Answer 2

x−3
x begin exponent 5 end exponent plus 2x minus 3