Posted by Rebecca on Thursday, October 13, 2011 at 9:10am.
One zero of f(x)=x^3+4x^2+x+c is 3.
a) calculate the value of c.
b)calculate the other zeros.

Grade 12 Advanced Functions  Anonymous, Thursday, October 13, 2011 at 10:14am
Ummm, didn't MathMate just do one of these for you? Plug in 3 and evaluate to find c.

Grade 12 Advanced Functions  Anonymous, Thursday, October 13, 2011 at 10:43am
Ummmmm, I needed help with the second part

Grade 12 Advanced Functions  Steve, Thursday, October 13, 2011 at 10:48am
Divide by x+3 and see what you get:
x^3 + 4x^2 + x 6
= (x+3)(x^2 + x  2)
= (x+3)(x+2)(x1)
Got it now?

Grade 12 Advanced Functions  Confused, Thursday, October 13, 2011 at 6:09pm
what about this question:
Determine the roots algebraically by factoring.
a) x^38x^23x+90=0
Answer This Question
Related Questions
 advanced functions/precalculus  1. The function f(x) = (2x + 3)^7 is the ...
 Grade 12 Advanced Functions  The polynomial 2x^3+px^2x+6 has a remainder of ...
 Algebra 2  One of the the zeros of the functions F(x)= x^4+2x^313x^238x24 is...
 math  The application of one function followed by the application of a second ...
 Precalculus  The application of one function followed by the application of a ...
 12th gradeAdvanced functions  the yintercept of the graph of y=k(x1)(x2)(x...
 Math  Q.1)If one zero of the polynomial 3x2kx2 is 2 find the other zero.allso...
 MathPolynomials/Zeros  How do I find complex zeros in a an equation if the ...
 alg 2  find all zeros of the following function: f(x)=x^3x^2+4x4 I have (x^2+...
 Math  The function f(x)=x^2+5x+6 has zeros at 2 and 3. What are the zeros of ...
More Related Questions