This week we learned about rational expressions and learned how to multiply and divide them.
Rational number: a quotient of two integers
Rational expression: quotient of two polynomials
- does not have an equal sign
- simplifying to it’s the simplest form
Rational Equation: an equation that contains at least one fraction whose numerator and denominator are polynomials
- has an equal sign
- solving for the x value
Non- permissible value
- values that cause the fraction to have a denominator with a value of (we cannot divide by zero, because it is undefined)
Solving the Rational expression:
- factor if possible
- look for anything common
- when simplifying, you cannot remove a variable by it’s self
- when dividing, reciprocate the number to multiply