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January 29, 2015

January 29, 2015

Posted by **anonymous** on Saturday, December 22, 2012 at 11:26pm.

f(x)=x^4+x^3-4x-6

cna you please show me how you got the answer please

- calculus -
**Steve**, Sunday, December 23, 2012 at 5:33amyou can use the synthetic division to find the smallest k such that (x-k) causes all the values in the bottom line to be positive.

Or, to provide an easier (but rougher) bound, see

http://www.mathsisfun.com/algebra/polynomials-bounds-zeros.html

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