Question

Which expressions are polynomials? x-1, 6+p, 8x-z^3, 5x^2-√x​

Answer 1

X-1 is the answer because I just did the quiz

Answer 2

Hello!

The answer is:

- $x-1$

- $6+p$

- $8x-z^{3}$

Why?

A polynomial is a mathematical expression that contains constant values like numbers, and variables like "x, y, z or p", these constants and variables can indicate algebraic operations like addition, subtraction, division, and product. The variables can have exponent numbers that define the degree of a polynomial.

- $x-1$ it's a polynomial because it have a constant value (1) and a variable (x), it's a first degree polymonial.

- $6+p$ it's a polynomial because it have a constant value (6) and a variable (p), it's a first degree polynomial.

- $8x-z^{3}$ it's a polynomial since it have a combination of two variables (x and z), it's a third degree polynomial since the largest exponent is 3.

- $5x^{2} -\sqrt{x}$ is not a polynomial since it have a square root. Polynomials does not contains roots.

Have a nice day!