Posted by **Tyra** on Monday, October 15, 2007 at 8:58pm.

Can you please help me with these problems I don't understand them? thanxs!

Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around, at each zero.

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

2(0-2)(0+4)^4 that's all I know

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

3(0-3)(0-6)^3

f(x) = -4(x - 5)^3

-4(0-5)^3

- ap algebra -
**bobpursley**, Monday, October 15, 2007 at 9:04pm
Take the first one:

the first zero is at x=2 (it makes the first term zero) the second zero is at x=-4

Now, for crossing the x axis (does the function change sign..take the x-2 term. If x <2, it is negative, if x>2, it is positive, so the function must cross the x axis at x=2. If it didn't change signs (check the (x+4)^4 term)), it much touch the x axis.

I will be happy to critique your thinking.

## Answer This Question

## Related Questions

- ap algebra - Can you please help me with these problems I don't understand them...
- ap algebra - can you check my answers please? Find the zeros for the polynomial ...
- Algebra-check my answers - can you check my answers please? Find the zeros for ...
- college algebra - find the zero's for the following polynomial and give the ...
- polynomial functioms-check - Can you please check my work and answers. Find the ...
- algebra - could you help me with the following,I don't understand. Find the x-...
- graphing exponential function - P(x) = -(x-a)^4 (x-b)^3 (x-c) where a>0, b<...
- math163 - Please i need all the process.. thank you.. for the polynomial, list ...
- math-163 - for the polynomial, list each real zero and its multiplicity. ...
- Algebra help! - I don't understand my problems that I am suppose to do. please ...

More Related Questions