Algebra 1Please, help me!
posted by Victoria on .
Find any excluded values of each rational expression.
1. t  1/ t^2  t
A: Excluded value: 1.
Simplify each rational expression, if possible. Identify any excluded values.
2. 3x^2/6x^3
A: 2x; x ≠ 2
3. 2n/n^2  3n
A: ?
4. s + 1/s^2  4s  5
A: ?
5. 12  3x/x^2  8x + 16
A: ?

#1 also t=0, since t^2t = t(t1)
The original expression must be examined for excluded values.
(t1)/(t^2t) = 1/t, so t≠0. But dividing top and bottom by t1 to get there means that t≠1, because you cannot divide by zero.
#2 huh? There is no x2 in the denominator.
1/(2x) x≠0
#3
2n / n(n3) = 2/(n3), x≠0,3
Same as #1 for logic.
#4
(s+1) / (s+1)(s5)
s≠1,5
#5
3(4x) / (x4)^2 = 3/(x4), x≠4