Posted by vincent on Tuesday, August 19, 2014 at 8:08pm.
58. Let GCF (x,y) represent the greatest common factor of x any y. If p is a positive even integer less than 11, for what value of p does GCF (p^2,81) have the greatest value?
- math - Steve, Tuesday, August 19, 2014 at 11:50pm
I'd make that 6, since 81 = 3^4.
p^2 must have some powers of 3 in it, else GCF(p^2,81) = 1.
GCF(36,81) = 9
9 would be better, but we needed an even integer.
- math - vincent, Wednesday, August 20, 2014 at 12:04am
Is it 4?
- math - Steve, Wednesday, August 20, 2014 at 6:01am
hmmm. Is it 4?
Is 4^2 = 36?
Does 4 have 3 as a factor?
Better read what I wrote, and this time pay attention.
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