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DF001
 one year ago
Need help with subtracting rational expression with unlike denominators.
DF001
 one year ago
Need help with subtracting rational expression with unlike denominators.

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surry99
 one year ago
Best ResponseYou've already chosen the best response.2Please post your question

DF001
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 4a2 }{ 3a+12 }  \frac{ a2 }{ a+4 }\]

DF001
 one year ago
Best ResponseYou've already chosen the best response.0Hi, do I multiple the denominators to the opposite fraction of the numerator and denominator?

surry99
 one year ago
Best ResponseYou've already chosen the best response.2Since you need a common denominator, you would have to multiply the first term (top and bottom ) by a+4...With this in mind what do you think you will then need to multiply the second term by (top and bottom)?

DF001
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ (a+4)(4a2) }{ (a+4)(3a+12) }  \frac{ (3a+12)(a2) }{ (3a+12)(a+4) }\]

surry99
 one year ago
Best ResponseYou've already chosen the best response.2Great now you can simplify. Do you know how?

DF001
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ (a+4)(4a2)  (3a+12)(a2) }{ (3a+12)(a+4) }\]

DF001
 one year ago
Best ResponseYou've already chosen the best response.0Do I distribute by foiling?

DF001
 one year ago
Best ResponseYou've already chosen the best response.0Does the denominator stay that way (3a+12)(a+4)

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0above is correct but whenever you can work with the lowest terms

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164057159:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164261944:dw

DF001
 one year ago
Best ResponseYou've already chosen the best response.0Thank you Triciaal. I don't work well with LCD so I stick with multiplying both fractions by opposite denominators. I hope that works

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0when you have different denominators find the lowest common denominator to work with when one is a factor of the other you do not multiply by the common factor twice

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0as I stated first that is correct but it can get cumbersome and in most cases you have to divide later to get the simpliest form

DF001
 one year ago
Best ResponseYou've already chosen the best response.0What I try to do is to make the two denominators the same when they are unlike

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164516899:dw

DF001
 one year ago
Best ResponseYou've already chosen the best response.0if it was (1/2)(3/4), can I make the denominators the same

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164577980:dw

DF001
 one year ago
Best ResponseYou've already chosen the best response.0im just wondering if that works like the lcd way

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164659366:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164707541:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441164751381:dw

DF001
 one year ago
Best ResponseYou've already chosen the best response.0So the LCD way and same denominator works the same way?

DF001
 one year ago
Best ResponseYou've already chosen the best response.0Thank you Triciaal. I wouldn't have known this since my professor isn't a native English speaker. :(

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0you are welcome and it is always ok to do it "your" way whatever is easier for you

triciaal
 one year ago
Best ResponseYou've already chosen the best response.0dw:1441165985738:dw
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