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3 votes
Multiple Choice

Which expression is a cubic polynomial?
(1 point)
3x² -1
x³-1
x²-x+3
3x²-x+3

User MomentH
by
8.4k points

1 Answer

6 votes

Answer:

the answer is x³-1.

Explanation:

A cubic polynomial is a polynomial of degree 3, which means that the highest exponent of the variable is 3. Of the four options given, only the expression x³-1 has a variable with exponent 3. Therefore, the expression x³-1 is a cubic polynomial.

The other three options are not cubic polynomials:

3x² -1 is a quadratic polynomial, since the highest exponent of the variable is 2.

x²-x+3 is a quadratic polynomial, since the highest exponent of the variable is 2.

3x²-x+3 is a quadratic polynomial, since the highest exponent of the variable is 2.

User Pavel Bely
by
8.4k points

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