Factor To go about the first one please show me the steps. Thanks 1. ? 2. Prime?
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Originally Posted by theloser Factor To go about the first one please show me the steps. Thanks 1. ? This is correct so far, to finish Originally Posted by theloser 2. Prime? This one looks tricky, are you sure its not ??
Originally Posted by pickslides This is correct so far, to finish This one looks tricky, are you sure its not ?? O.O I made a mistake... It is its not a perfect squared and I don't see any factors of 144 that would total -15.
2. Prime? [/QUOTE] for all x in R ===> no factorization over R.
Originally Posted by theloser O.O I made a mistake... It is its not a perfect squared and I don't see any factors of 144 that would total -15. Substitute: x^2=t
I think its prime.
See the graph. Not that you needed confirmation, but the discriminant (once you've made Zach's substitution) would have told you at a glance.
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