12-3/12-4 Multiplying/Dividing Rational Expressions
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Transcript of 12-3/12-4 Multiplying/Dividing Rational Expressions
12-3/12-4 Multiplying/Dividing Rational Expressions
SWBAT:• Multiply/Divide Rational Expressions• Use Dimensional Analysis with Multiplication
Multiplying Rational Expressions
• To multiply Rational Expressions simply think back to Multiplying Fractions.
• Remember we multiplied numerators and multiplied denominators.
Multiplying Rational Expressions
• We can use either method to Multiply Rational Expressions…
1
3
2
1
1
a
b2
11
c
Multiply Expressions with Polynomials
• Sometimes you must factor quadratic expressions before you can simplify a product of rational expressions
Dividing Rational Expressions
• Remember dividing rational numbers expressed as fractions?
• Instead of dividing, we multiply by the reciprocal of the Divisor.
• Use the Same Process to Divide Rational Expressions.
Example 1: Dividing Expressions with Monomials• Find the Quotient:
Instead of Dividing, Multiply by the reciprocal of the Divisor!
Example 2: Dividing Expressions with Binomials• Find the Quotient:
Instead of Dividing, Multiply by the reciprocal of the Divisor!