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help with this LCD question!?
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2 Answers
- llafferLv 71 year agoFavourite answer
The LCD of two denominators:
2x + 8 and (x + 4)²
First, factor what you can. The first denominator has 2 as a common factor and there is nothing to do on the second. That gives us:
2(x + 4) and (x + 4)²
The first has a "2" that the second doesn't and the second has an (x + 4) that the first doesn't (after taking into account the shared (x + 4). So the LCD is:
2(x + 4)²
Your answers are the first and fifth options from your multiple choice.
- Anonymous1 year ago
2x+8 = 2(x+4)
(x+4)^2
x^2-x-20 = (x-5)(x+4)
The answers are 2, (x+4)^2 and (x-5)
(x+4) isn't an answer choice and it's already included as a factor in (x+4)^2
