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anonymous
 5 years ago
how do you find the least common denominator for a rational expression?
anonymous
 5 years ago
how do you find the least common denominator for a rational expression?

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0you factor out the denominators and see what each one is missing...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that's it? you think you could give me an example?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0I could, but itd be easier if you had a problem we could work :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0suppose these are the bottoms of two glorified fractions(rational expressions)...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0(x+2)(x+1) and (x+2)(x)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0what do they need to "look alike"?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0good, but alittle of track. Think of the ()paranthesis as being a single number wrapped up. We cant just go adding a +1 to everything :) the left one is missing an (x) the right one is missing a (x+1) the common "numbers" are going to be: (x)(x+1)(x+2) dos that make sense?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.01 1  +  what would our common denominator of this be? (x3) (x)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0lets replace our "x" with a real value, lets use the number 5 and see if this turns this into somethng more familiar... 1 1  +  (53) (5) 1 1  +  what would our common denominator of this be? 2 5

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.010 is correct..now how do we make each side have a denominator of 10?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0multiply 2 by 5 and 5 by2?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0thats is right.... now lets use that knowledge when we turn the 5 back into an "x". 1 1  +  what would our common denominator of this be? (x3) (x) You do it the EXACT same way you did with the numbers, just think of the paranthesis as a single "wrapped up" number ok...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so i multiply3 to (x)?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i hope to continue this later i have to get going thanks!!!!!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0close..... your almost there :) but tell me.. is one of our numbers a (3)? We have two "numbers": (x3) and (x) those are the only two "numbers" we want to use. There is no (3) in our example...... only a number that is equal to (x3) and another number that is equal to (x).
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