## GoldRush18 3 years ago Determine the values of the real number h for which the roots of the quadratic equation 4x^2-2hx+(8-h)=0 are real.

1. GoldRush18

i need help!!

2. eyust707

I would use the quadratic formula..

3. GoldRush18

4. eyust707

you will learn that the answer is of the least importance.. What matters is the method!

5. eyust707

Ans thats what open study is all about! I teach you how if you would like.

6. GoldRush18

7. eyust707

sure!

8. eyust707

have you learned the quadratic formula?

9. GoldRush18

yes i have

10. eyust707

"x equals negitive b plus or minus the square root b squared minus of four a c all over two a"

11. GoldRush18

in this case what would b the value for c

12. eyust707

$x = (-b \pm \sqrt{b^2 - 4 *a *c})/2a$

13. eyust707

well that equation uses this: $ax^2 +bx +c = 0$

14. eyust707

a is whatever is in fron of the x^2

15. eyust707

so what is a?

16. GoldRush18

a is 4

17. eyust707

b is whatever is in front of x...

18. eyust707

so what is b?

19. GoldRush18

-2

20. eyust707

what about the h? that is in front of x too!

21. eyust707

we cant get rid of that... we are ging to use it to make our analysis

22. GoldRush18

oh ok