Question

Rational expressions: (1)/(r²-1) = (2)/(r²+r-2)
These are fractions !

Answer 1

r^2 - r

Answer 2

r equals 0

Answer 3

\[1/(r-1)(r+1)=2/(r+2)(r-1)\]
\[1/(r+1)=2/(r+2)\]

Answer 4

2(r+1)=r+2
2r+2=r+2
r=0

Answer 5

you have to add that:
r is NOT = -2
r is not = -1
r is not = 1
(can't divide by 0)

Answer 6

1 0r 0

Answer 7

Can't be 1, zero divisor

Answer 8

it a quardatic eq.

Answer 9

As presented, cannot be 1.