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michaeln Group TitleBest ResponseYou've already chosen the best response.0
factor 2x^2+7x15 = (2x3)(x1) factor x5/2x^25x+3 = (2x3)(x+5) can you find the LCD now?
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
Seems more like a GCF than an LCD, doesn't it? Odd question...
 2 years ago

dddan Group TitleBest ResponseYou've already chosen the best response.0
so does this mean that the lcd is (2x3)(x1)(x+5)?
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
I suppose so. If you had fractions where the first fraction had the first expression as a denominator and the 2nd fraction had the 2nd expression as its denominator, then the LCD would be the expression you just wrote...
 2 years ago

JakeV8 Group TitleBest ResponseYou've already chosen the best response.0
The point, I guess, is that by factoring FIRST, you realize that (2x3) is actually a common factor, and so you wouldn't multiply by that... if you just multiplied the original expressions together to try to get the LCD, it would be a common denominator, but it wouldn't be the LEAST one... it would be too big by an extra factor of (2x3)
 2 years ago
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