A few days ago
Algebra help homework help.?
add the following polynomial fractions
(a – 1)/(a + 1)+(a + 1)/(a – 1)
Top 4 Answers
A few days ago
Favorite Answer
you have to make a common denominator, which would be (a+1)(a-1).
Multiplying each term by wahtever it’s missing you get:
(a-1)(a-1) + (a+1)(a+1)
——————————-
(a+1)(a-1)
There’s no common terms, so you have to just expand and cancel out
a^2 – 2a + 1 + a^2 + 2a + 1
————————————-
(a+1)(a-1)
2a^2 +2 (the 2a’s cancel)
———–
2a^2 – 1
1
A few days ago
multiply through by common denominator: (a+1)(a-1)
to get: ((a-1)^2+(a+1)^2)/(a+1)(a-1)
(a^2-2a+1+a^2+2a+1)/(a^2-1)= 2(a^2+1)/(a^2-1)
0
A few days ago
i got 2a/a^2-1
0
A few days ago
(2a^2)/((a+1)(a-1))
0
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