SOLUTION: how do u work out a problem like this it says find the least common denominator
2.......3
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x-3 2x+3
if u could explain how to work this out i would really
Algebra ->
Rational-functions
-> SOLUTION: how do u work out a problem like this it says find the least common denominator
2.......3
----- -----
x-3 2x+3
if u could explain how to work this out i would really
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Question 192666: how do u work out a problem like this it says find the least common denominator
2.......3
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x-3 2x+3
if u could explain how to work this out i would really appreciate it
You can put this solution on YOUR website! find the least common denominator
2.......3
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x-3 2x+3
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The least common denominator is the smallestini algebraic
expression into which the various denominators can be evenly
divided.
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For example if you have 1/2 + 2/5, the lcd is 2*5 = 10
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The lcd of 1/20 + 1/16 you have to see the factors of 20 and of 16:
20 = 2^2*5
16 = 2^4
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The lcd must have each of these different factors to there
highest power.
The lcd is 5*2^4 = 5*16 = 80
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So with algebraic expressions
The lcd of x^2-9 and x^2+5x+6 = ?
Factor each one:
x^2 - 9 = (x+3)(x-3)
x^2+5x+6 = (x+3)(x+2)
The lcd is (x+2)(x+3)(x-3)
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Using Google you may be able to see more examples of lcd problems.
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Cheers,
Stan H.
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