Posted by kc on Sunday, May 23, 2010 at 11:15am.
list all the possible rational zeros of f using the rational zero theorem. then find all the zeros of the function.
1. f(x)=x^26x+5
2. f(x)=x^3+x^210x+8

algebra  Jen, Sunday, May 23, 2010 at 4:34pm
This is just asking you to factor. I'll do the first one for you (I forget how to do problems like the second.) x^26x+5..you have to get the two numbers to multiply to your last number (5) and add/subtract up to your middle number (6), so the numbers you want are 5 and 1, written like this (x5)(x1), where x=5 and 1. You can then plug either of those numbers back into the equation and you see that both work.
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