## Diana.xL one year ago ...

1. Diana.xL

x^2+4x +4 = 0

2. Diana.xL

@imqwerty

3. kittiwitti1

What do you want to do with this equation?

4. imqwerty

1)compare this equation with$ax^2+bx+x=0$ 2)identify a,b,c 3)apply this formula to find discriminant$D=b^2-4ac$

5. kittiwitti1

$x^{2}+4x+4=0\text{ Solve for x?}$

6. Diana.xL

x^2 + 4x +4 = 0 a = 1, b = 4, c = 4 D = 4x - 4(1)(4)

7. Diana.xL

would my final answer be 0?

8. imqwerty

wait u wanna knw discriminant or roots?

9. Diana.xL

yes i do. its just like the other question u answered.

10. kittiwitti1

If you're solving for x then the quadratic formula would be of better use:$x=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

11. kittiwitti1

What do you mean by your final answer then?

12. imqwerty

ok yes D=0 is correct

13. Diana.xL

Find the value of the discriminant for each quadratic equation below. Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula. Then use the value to determine how many real number solutions each equation has.

14. Diana.xL

this is what its asking

15. kittiwitti1

Okay. Please post that next time because I got confused :p

16. Diana.xL

haha ok

17. Diana.xL

@imqwerty The quadratic equation will be having only one real root.?

18. kittiwitti1

I suck at discriminants though so yeah ask the great qwerty ^^

19. imqwerty

back

20. imqwerty

yes because D=0 there is only 1 real root

21. Diana.xL

ok thnx!!

22. imqwerty

np :)

23. Diana.xL

can u help with one more?

24. imqwerty

yea y not

25. Diana.xL

Find the value of the discriminant for each quadratic equation below. Show all steps needed to write the answer in simplest form, including substituting the values of a, b, and c in the discriminant formula. Then use the value to determine how many real number solutions each equation has. 5x^2 + x = 4

26. imqwerty

ok do the same steps

27. Diana.xL

a = 5, b = 1, c = 4 D = 1 - 4(5)(4) D = 81. is it correct?

28. imqwerty

back

29. imqwerty

1st u need to convert the equation into this form-$ax^2+bx+c=0$so there shuld be a 0 on the left hand side can u bring a zero out there by subtracting 4 from both sides :)

30. Diana.xL

i dont understand