#I need help with algebraic fractions

45 messages · Page 1 of 1 (latest)

grim doveBOT
glass whale
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is that (2/x+1 - 1/x-2) = 2/×^2-4+x+4

humble lily
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why?

glass whale
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i cant tell what the question is

humble lily
glass whale
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no thats what im assuming is the question

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its not the answer

humble lily
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ahh ok

humble lily
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is division

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not equal

glass whale
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oh

humble lily
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u can do it?

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and explain me?

echo roost
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First thing to do is make 2/(x+1) and 1/(x-2) have the same denominator

humble lily
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Like this?

IMG_2205.jpg
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Nah,i think im wrong

echo roost
humble lily
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really?

echo roost
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Ye thats correct

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Now writebthe numerator of the 2 fractions

humble lily
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I did this but i dont understand very well why its 2(x-2) or 1(x+1),idk if its good

IMG_2206.jpg
echo roost
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The reason its 2(x-2) is so the fraction remains the same
Pretty much what you did is multiply both the denominator and numerator of the fraction 2/(x+1) by (x-2)

humble lily
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and its ok? or its wrong

humble lily
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Guys

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I think i dit it my own

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With a little IA Help

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someone can tell me if its correct?

livid kernel
humble lily
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Now i have another problem,i have to understand this

IMG_2200.jpg
livid kernel
humble lily
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The quadratic formula is easy,the thing is what are the thing up

livid kernel
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ohh

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The derivation?

humble lily
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This

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I dont understand a shit of that

echo roost
# humble lily

The first line to the second line is just rewriting the right hand side, its still the same equation (this is doing something called completing the square)
The 2nd line to 3rd line is putting -b^2/4a +c to the left hand side and take the square root on both sides

humble lily
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i think i finished

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i dont need more help,tysm guys

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bye

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.solved