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rayssabruna
@rayssabruna
October 2020
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Simplificando a expressão (x^2-1)/(x^2-x) - (x^2+2x+1)/(x^2+x) para x € R - {-1,0,1} obtém-se
a) x
b) x^2
c) x-1
d) x^2-1
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3478elc
Verified answer
(x^2-1) - (x^2+2x+1) ==> (x+1)(x -1) - (x+1)(x+1)
(x^2-x) (x^2+x) x(x-1) x(x + 1)
(x+1) - (x+1) ==>
x + 1 - x - 1
==>
0
==> 0
x x x x
1 votes
Thanks 2
MATHSPHIS
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4 votes
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Lista de comentários
Verified answer
(x^2-1) - (x^2+2x+1) ==> (x+1)(x -1) - (x+1)(x+1)
(x^2-x) (x^2+x) x(x-1) x(x + 1)
(x+1) - (x+1) ==> x + 1 - x - 1 ==> 0 ==> 0
x x x x
Verified answer