Asked by Lavern
simlify by removing factors of 1
(r^2-1)/(r+1)square 2
(r^2-1)/(r+1)square 2
Answers
Answered by
Vosnian
r ^ 2 - 1 = ( r + 1 ) * ( r - 1 )
( r ^ 2 - 1 ) / ( r + 1 ) ^ 2 =
[ ( r + 1 ) * ( r - 1 ) ] / [ ( r + 1 ) * ( r + 1 ) ] =
( r - 1 ) / ( r + 1 )
( r ^ 2 - 1 ) / ( r + 1 ) ^ 2 =
[ ( r + 1 ) * ( r - 1 ) ] / [ ( r + 1 ) * ( r + 1 ) ] =
( r - 1 ) / ( r + 1 )
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