Evaluating Rational Expressions

This video tutorial explains how to evaluate rational expressions by substituting variables with given values. It provides multiple examples, including expressions with variables p, x, y, and r, and demonstrates the step-by-step process of substitution and simplification. The tutorial also includes practice exercises for students to apply what they've learned.

What is the first step in evaluating a rational expression?

• Divide all terms by the variable

• Multiply all terms

• Substitute the variable with the given value

• Combine like terms

In the expression p + 1 over 3p + 2, what is the result when p equals 2?

• 6/7

• 7/6

• 8/9

• 9/8

What is the value of 3x + 5 over 2x + 14 when x equals -6?

• 11/2

• -11/2

• 13/2

• -13/2

What is the result of y - 5 over y + 12 when y equals 5?

• 1

• 0

• 5/17

• 17/5

In the expression 5x - 10 over 12x - 3, what is the result when x equals 3?

• 3/5

• 5/3

• 33/5

• 5/33

What is the value of 2r + 4 over 7r - 2 when r equals 5?

• 33/12

• 12/33

• 33/14

• 14/33

What is the result of p - 8 over p + 11 when p equals 11?

• 3/22

• 22/3

• 11/22

• 22/11