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algebra

by sud21 » Wed Jan 25, 2012 6:14 pm
If r@s=s@r which of the following can define the equation?
1. r@s=r+s-rs
2. r@s=(r+s)(r-s)
3. r@s =r/s+ s/r
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by rijul007 » Wed Jan 25, 2012 7:01 pm
If r@s=s@r which of the following can define the equation?
1. r@s=r+s-rs
s@r = s+r -sr
Correct

2. r@s=(r+s)(r-s)
s@r = (s+r)(s-r)
Wrong

3. r@s =r/s+ s/r
s@r = s/r + r/s
Correct

1 & 3
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