Exponents

Question

How do you handle a question like this?


(x^2001 + x^2002)/(x^2002 - x^2000)

thearch · Answer

just collect

x^2001(x+1) for the numerator
x^2000(x^2-1) for the denominator

simplify to get x/(x-1)

trivikram · Answer

Use componendo/dividendo

c/d = c+d/c-d

using the same principle above

(x^2001 + 2*x^2002 - x^2000)/(x^2001 + x^2000)

x^2000(x+2*x^2 -1)/x^2000(x+1)

(2x-1)(x+1)/(x+1) = 2x-1

ywilfred · Answer

Solve by taking out common factors:

(x^2001 + x^2002)/(x^2002 - x^2000)

= (x^2001)(1+x)/(x^2000)(x^2-1)

= x^2(1+x)/(x+1)(x-1)

= x^2/(x-1)

consultinghokie · Answer

so we have three different answers. maybe this wasn't such an easy problem.

mendiratta_1812 · Answer

taking x^2001 common from numerator leaves, (x+1)
taking x^2000 from denominator leaves, (x^2-1) i.e. (x+1)(x-1)

cancelling x^2000 & (x+1) from numerator & denominator, it leaves us with 
 x/(x-1)

remgeo · Answer

I am getting x/(x-1)

consultinghokie · Answer

what do you think the difficulty rating of a question like this is?

kook44 · Answer

I'd say this is a harder question. Maybe not the  hardest  but i woauld say Quant 46+ level...
Agree? Disagree?

remgeo · Answer

I doubt it. I think it is easy/medium group. 
I know there are different answers to this qtn. But that is only bcoz of carelessness. Not bcoz the qn is difficult.

consultinghokie · Answer

i guess difficulty is all relative - who knows how ETS assigns "value" to the questions

shampoo · Answer

gettig x(x-1), nice question.

Dilshod · Answer

agree
x^2001(1+x)/x^2000(x^2-1)=x/(x-1)

Yurik79 · Answer

(x^2001 + x^2002)/(x^2002 - x^2000)=
x^2001(X+1)/x^2000(X^2-1)=x(x+1)/(x-1)*(x+1)=x/(x-1)

Yurik79 · Answer

should be x(1+x)/(x+1)*(x-1)

ipc302 · Answer

simple easy bin question 34-40 level ..just my opinion . who knows what they think .

minu · Answer

One more for x/x-1 using factorization

TeHCM · Answer

<img src="{SMILIES_PATH}/033102good_1_prv.gif" alt=":good" title="Good" />

M8 · Answer

Definitely the answer is  x/(x-1).

Exponents

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