## InsanelyChaotic 2 years ago Solve. 9x2 - 21x + 15 = 0

1. hartnn

2. mayankdevnani

9x^2 – 21x + 15 = 0 You can factor a 3 out of every term!!!! what you get???? @InsanelyChaotic

3. InsanelyChaotic

one sec:)

4. mayankdevnani

plz

5. InsanelyChaotic

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6. mayankdevnani

what is this??? is this your answer?

7. InsanelyChaotic

yeah

8. hartnn

b^2-4ac = 49-4*3*5=...?

9. mayankdevnani

VERY SIMPLE!!!!- can you factor a 3 out of every term!!!! @InsanelyChaotic

10. hartnn

you always make mistke in b^2-4ac term

11. mayankdevnani

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12. InsanelyChaotic

Is it a negative...?

13. mayankdevnani

@InsanelyChaotic

14. InsanelyChaotic

excuse me??????

15. hartnn

yes, b^2-4ac comes out to be negative

16. hartnn

what your b^2-4ac comes out to be ?? show your work, plz.

17. mayankdevnani

@InsanelyChaotic can you solve it??? or done it???? be fast!!!! its so simple one

18. InsanelyChaotic

haha if only it was that easy mayan

19. mayankdevnani

plz answer it !!!!

20. InsanelyChaotic

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21. hartnn

with practice, it will become easy

22. hartnn

haha, can't see what u wrote under sqrt.

23. InsanelyChaotic

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24. mayankdevnani

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25. hartnn

no, b^2-4ac = 7^2-4*3*5=.... ?

26. mayankdevnani

@InsanelyChaotic hey!!!! cool down!!!! can you solve it!!!! answer it!!!! be fast m waiting

27. InsanelyChaotic

Ok, let me try again, but i need to know if the outcome will be negative or not?

28. InsanelyChaotic

haha dude i'm calm

29. hartnn

yes, b^2 -4ac comes out to be negative

30. InsanelyChaotic

thanks

31. mayankdevnani

@hartnn i am wrong??

32. hartnn

u mised a 'x' , 21x/3

33. InsanelyChaotic

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34. mayankdevnani

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35. hartnn

thats correct @InsanelyChaotic

36. hartnn

oh, wait, it will be +7

37. InsanelyChaotic

so it is negative?

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39. hartnn

yup

It is complex

41. hartnn

yes, x is complex......because b^2-4ac was negative

42. InsanelyChaotic

thank you guys

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44. hartnn

welcome ^_^