x - 2 over 2-x
and
x-1 over x^ minus 1
2007-10-01 03:40:09 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
also, i did x plus 9 over x^ minus x minus 12 and got:
undefined....is this right?
2007-10-01 03:41:12 · update #1
(x-2)/(2-x)
= (x-2)/-(x-2)
= -1
(x-1) / x^-1
= (x-1) / (1/x)
= (x-1) . x
= (x-1)x
=x^2 - x
2007-10-01 03:54:56 · answer #1 · answered by Kid 3 · 0⤊ 0⤋
Question 1
(-1)(2 - x) / (2 - x) = (-1)
Question 2
(x - 1) / [ (x^(-1) ]
(x - 1) / (1 / x)
x (x - 1)
2007-10-01 04:00:32 · answer #2 · answered by Como 7 · 0⤊ 0⤋
x-2 / 2-x
=x-2 / -(x-2)
=-1
x-1 / x^-1 = x-1 / (1/x) = x(x-1).
2007-10-01 03:49:00 · answer #3 · answered by Kenneth Koh 5 · 0⤊ 0⤋
x - 2 / 2 - x
x - 2/ -(x - 2)
answer: -1
x - 1 / x^-1
x - 1 / (1/x)
x(x -1)
answer: x^2 - x
2007-10-01 03:50:46 · answer #4 · answered by ar.ke.ll 2 · 0⤊ 0⤋
(x-2)/(2-x)
=(x-2)/-(x-2)
= -1 ans
(x-1)/(x^2-1)
=(x-1)/ (x+1)(x-1)
=1/(x+1)
2007-10-01 03:45:20 · answer #5 · answered by alpha 7 · 0⤊ 0⤋