10.1.4 & 10.2.1
Friday, April 20, 2012
10:03 AM
Assignment: 10.1.4 & 10.2.1 # 34 - 37, 39, 52 - 54
Simplifying
Rational
Expressions
To simplify rational expressions, both the numerator and denominator must first be written in factored form. Then, look for factors that make 1 and simplify.
Multiplying & We can multiply & divide rational expressions just like we
Dividing multiply & divide fractions. The expressions must first be
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Dividing
Rational
Expressions multiply & divide fractions. The expressions must first be factored, then simplified where possible. Remember to find the excluded values for x (the values that make the denominator equal zero).
Fraction
Busters -
Solve 2
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Solve 2
Busters -
Solving
Equations w/Fractions
This equation would be easier to solve if there were no fractions. Our goal is to find an equivalent equation that has no fractions.
Multiply both sides of the equation by the common denominator (which is 15 in this example).
3 5
2
1
The result is an equation without fractions.
34.
35.
a)
b)
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b) c)
2 1
3 7
3 8
1
d)
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36.
1.
What values for p are not allowed? How do you know?
2.
Rewrite then solve the equation. Check your
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2.
Rewrite then solve the equation. Check your solutions. What happened?
37.
Change each fraction to a simpler equivalent equation. Check your solutions.
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SOLVING EQUATIONS USING DIFFERENT METHODS
44) Try an easier one first…
4(x + 3) = 20
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4(x + 3) = 20
45) Solving by REWRITING
4(x + 3) = 20
46 Solving by UNDOING
4(x + 3) = 20
47) Solving by LOOKING INSIDE
4(x + 3) = 20
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