Unit 5 Benchmark Review

Front

What is the restriction of a rational expression?

Back

The restriction of a rational expression is found by setting the denominator equal to zero and solving for the variable.

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Front

How do you subtract fractions with different denominators?

Back

To subtract fractions with different denominators, find a common denominator, convert each fraction, and then subtract the numerators.

Front

What is the solution for x in the equation x + 3 = 0?

Back

x = -3

Front

What is the solution for x in the equation 2x - 10 = 0?

Back

x = 5

Front

What is a rational expression?

Back

A rational expression is a fraction where the numerator and the denominator are polynomials.

Front

What is the first step in solving a rational equation?

Back

The first step is to identify any restrictions by setting the denominator equal to zero.

Front

How do you simplify a rational expression?

Back

To simplify a rational expression, factor the numerator and denominator and cancel any common factors.

Front

What does it mean for a fraction to be in simplest form?

Back

A fraction is in simplest form when the numerator and denominator have no common factors other than 1.

Front

What is the least common denominator (LCD)?

Back

The least common denominator is the smallest multiple that is common to the denominators of two or more fractions.