anonymous one year ago HELP PLEASE WITH AN ALGEBRA QUESTION

1. anonymous

2. Loser66

n is the degree of it, right?

3. anonymous

yes

4. Loser66

hence, it is a cubic, right?

5. anonymous

right!

6. Loser66

what are they? the zeros??

7. Loser66

I don't get, 3 and 4 and 5i?? you meant you have 3 zeros?

8. Loser66

Can you scan and post the original problem? don't type

9. anonymous

i dont have time

10. Loser66

ok, it is (58/9) (x^2 +5)(x -4) if it is not that, I don't know how to solve it.

11. Loser66

you open parentheses to get the expand form

12. Michele_Laino

please try this polynomial: $\Large f\left( z \right) = k\left( {z - 3} \right)\left( {z - 4} \right)\left( {z - 5i} \right)$

13. Michele_Laino

you have to determine k, such that the subsequent condition holds: $\Large f\left( { - 2} \right) = 116$ namely your condition

14. Michele_Laino

15. Loser66

he has only 2 roots, not 3, 3 is the degree of the polynomial @Michele_Laino

16. Michele_Laino

ok!

17. Loser66

One more thing: Although -5i is not stated out, but when we have 5i is a root, then, so as -5i, right?

18. Michele_Laino

yes!

19. Loser66

ok