Sunday

February 1, 2015

February 1, 2015

Posted by **ladybug** on Monday, October 1, 2012 at 11:57pm.

f(x)=x^4+7x^3-x-2

every real zero of f lies between - ? and ?

- pre-calculus -
**Reiny**, Tuesday, October 2, 2012 at 10:11amx^4+7x^3-x-2 = 0

no simple way to solve this, so ....

Wolfram says:

http://www.wolframalpha.com/input/?i=x%5E4%2B7x%5E3-x-2+%3D+0

real roots are -6.99 and .705

There are only those two real roots, so there are no other real roots between ....

**Answer this Question**

**Related Questions**

algebra - Find a bound on the real zeros of the polynomial function f(x)=x^4+x^3...

college algebra, Please help!! - find a bound on the real zeros of the ...

pre-calculus - information is given about the polynomial f(x) whose coefficients...

math - If the digits of a number may be any one of 0 through 9 (except the first...

math - If the digits of a number may be any one of 0 through 9 (except the first...

math - If the digits of a number may be any one of 0 through 9 (except the first...

pre calculus - use the rational zeros theorem to find all the real zeros of the ...

pre calculus - use given info about a polynomial whose coefficients are real ...

College algebra - Use the rational zeros theorem to find all the real zeros of ...

college algebra - use rational zeros theorem to find all the real zeros in the ...