Introduction to Rational Expressions

• rational number

• not rational algebraic expression

• rational algebraic expression

• domain

It is also known as algebraic fraction.

• Rational Algebraic expression

• Irrational algebraic expression

• domain

• rational numbers

What makes rational algebraic expression undefined?

• when the numerator becomes 0

• when the denominator becomes 0

• when the value of the given variable is equal to 0

• when the restricted value is equal to 0

What is the non-permissible value of this rational expression.

• 0 and 2

• 2 and 3

• 0 and 1.5

• 1.5 and -1.5

• 2

• 7

• 3

• 0

• -2

Find the excluded value(s).

• n = 0

• n = 24

• n = -24

• n can be any real number

Classify 17/10

• Whole

• Rational

• Natural

• None of the above

7.1 Reduce Rational Expressions

• f(0) = 0

• f(0) = -1/3

• f(0) = 1

• f(0) = 3

7.7 Solving Rational Equations

• x = -9

• x = -27

• x = 3

• x = 27

7.3 Least Common Denominator

• 4/2x²

• 2x/2x²

• (3 + 2x)/ 2x²

• 1/2x²