The video introduces rational expressions, emphasizing their importance in the course. It explains that rational expressions are fractions of polynomials, contrasting them with simple numerical fractions. The video defines polynomials as sums of monomials with specific rules, such as no negative exponents or variables in denominators. It also covers the general form of polynomials and provides examples of different types, like binomials and trinomials. The video concludes by highlighting the operations and simplifications that will be performed on rational expressions throughout the course.

What is the primary focus of the course as introduced in the video?

• Rational expressions

• Trigonometric functions

• Algebraic equations

• Geometric shapes

How are rational expressions initially described in the video?

• As complex numbers

• As simple fractions

• As geometric figures

• As algebraic equations

What constitutes a rational expression according to the video?

• A fraction of integers

• A fraction of polynomials

• A product of variables

• A sum of equations

What is a polynomial as defined in the video?

• A sum of monomials

• A difference of equations

• A product of fractions

• A division of variables

Which of the following is NOT a characteristic of a polynomial?

• No multiplication of variables

• Sum of monomials

• Variables with negative exponents

• Variables in descending order

What is a characteristic of a polynomial's variables?

• They can have negative exponents

• They are arranged in descending order

• They can be multiplied together

• They can be in the denominator

What is NOT allowed in a polynomial according to the video?

• Negative exponents

• Constants

• Positive exponents

• Variables

What is the general form of a polynomial as described in the video?

• a^n * x^n + a^(n-1) * x^(n-1) + ... + a^0

• a^n * x^n - a^(n-1) * x^(n-1) - ... - a^0

• a^n / x^n + a^(n-1) / x^(n-1) + ... + a^0

• a^n + x^n + a^(n-1) + x^(n-1) + ... + a^0

Which of the following is an example of a polynomial?

• All of the above

• A single number

• A binomial

• A trinomial

Which of the following is NOT a type of polynomial mentioned in the video?

• Binomial

• Trinomial

• Quadrinomial

• Monomial