Sunday

November 23, 2014

November 23, 2014

Posted by **Leanna** on Sunday, September 12, 2010 at 10:08pm.

I think it can't be determined but i don't know!

- Calculus..Need Help Soon -
**MathMate**, Sunday, September 12, 2010 at 11:40pmFind A+B in

f(x)=3X^3+Ax^2+Bx+2,

Hints:

1. two of the roots are 1 and 2, then two of the factors are (x-1) and (x-2)

2. the third root must be of the form

(3x±1) to satisfy the coefficient 3x^3 and the constant term.

3. Determine the sign of the factor in (2).

4. Expand

(x-1)(x-2)(3x±1)

to find A and B, and hence A+B.

**Answer this Question**

**Related Questions**

calculus - For the following function f(x)=2x^4-6x^2+2x-1. Find the maximum ...

Calculus - Form a polynomial, f(x) with real coefficients having the given ...

calculus - use the given zeros to find the remaining zeros of the function h(x)=...

algebra need help soon - I have been working on these 2 problems and I think I ...

calculus--please help!! - I have two questions that I don't understand and need ...

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

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

calculus-can someone please help me with this ques - Find all zeros of the ...

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

algebra - Could you help me with this? find the real zeros of f(x) = x^3-8^2+9x+...