To reduce to the lowest terms, we'll have to factorize the
numerator and to write the denominator as a product of linear
factors.
We'll factorize the numerator by
x^3:
(x^5-x^3) = x^3(x^2 -
1)
But x^2 - 1 is a difference of
squares:
x^2 - 1 =
(x-1)(x+1)
We'll compute the roots of the
equation:
(x^2 - 3x + 2) =
0
x1 = 2
x2 =
1
S = 2+1 = 3
P =
2*1
The equation is written as a product of linear
factors:
(x^2 - 3x + 2) =
(x-x1)(x-x2)
(x^2 - 3x + 2) =
(x-1)(x-2)
We'll re-write the
expression:
x^3(x-1)(x+1)/(x-1)(x-2) =
x^3(x+1)/(x-2)
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