anonymous one year ago perfect square?

1. anonymous

@geerky42 do you know about perfect squares, sorry to bother you

2. anonymous

@texaschic101

3. anonymous

I'm pretty sure that to create a perfect square trinomial you divide the middle term by 2, square it, and then add it to the expression so it is the 3rd term

4. anonymous

@RiOT so to square 4w it would be 4w^2

5. anonymous

6. anonymous

sorry, just the coefficent, so it would be 4^2

7. anonymous

oh but why just the coefficient

8. anonymous

have you learned about completing the square?

9. anonymous

yeah sorry that was a stupid question my bad

10. anonymous

are you in algebra 2? i'm doing it right now and so I could be wrong but I believe that's what this is

11. anonymous

no, no problem

12. anonymous

@RiOT did i do the second one right

13. anonymous

I'm doing a college math but like sometimes when you just put the coefficient i get it wrong

14. anonymous

I'm sorry, I'm not sure about the second one

15. anonymous

hmm well i got 3.35078106, or 0.14921894

16. anonymous

so i have to round to the nearest hundredth

17. anonymous

so wouldn't it be 4.3

18. anonymous

I'm not saying you're wrong, I'm just not 100% sure how to solve that problem. I'm sorry :/

19. anonymous

@geerky42 any input

20. anonymous

@riot np

21. anonymous

@peachpi any input on my second question

22. geerky42

Check again. There is more than one solution.

23. anonymous

yeah 3.35078106, and 0.14921894

24. anonymous

so you're saying i show go for 0.14921894 @geerky42

25. anonymous

@geerky42 then wouldn't it be 1.1 by rounding to the nearest hundredth

26. anonymous

or 1.14

27. geerky42

Yes that one, but that's not how you rounding.

28. geerky42

You just rounding to nearest hundredth For example: |dw:1433958363553:dw|

29. geerky42

Which is $$0.15$$

30. anonymous

ah i see sorry well one more check please i believe it's correct @geerky42

31. geerky42

It's ok and you are correct.

32. anonymous

ok thanks and hey i remember you telling me something about the local minimum and maxima but just to double check man sorry @geerky42

33. anonymous

@geerky42

34. geerky42

|dw:1433959525927:dw|

35. geerky42

|dw:1433959551853:dw|

36. geerky42

So local minimums are|dw:1433959575568:dw| here, right?

37. geerky42

So for first answer, you need x-values where local minimums occur.

38. anonymous

so -2,-3 @geerky42

39. anonymous

-2 would be the x value

40. geerky42

Close. It's -2 and 3.

41. anonymous

but how is it positive 3

42. anonymous

and I'm assuming the second answer is ok

43. geerky42

|dw:1433959794678:dw|

44. anonymous

45. geerky42

46. anonymous

wait but last time i had this right dammit this is confusing

47. geerky42

Seen in picture, you entered 0, 3 for second part.

48. geerky42

I believe it should be -3, 0

49. anonymous

ok for the first one its not 3,3 it -2,3 because the x values where the local minimums occur so for the y values -3,0

50. anonymous

51. geerky42

$$\color{blue}{\text{Originally Posted by}}$$ @Mromanos96 ok for the first one its not 3,3 it -2,3 because the x values where the local minimums occur so for the y values -3,0 $$\color{blue}{\text{End of Quote}}$$ That's correct.

52. anonymous

i believe that is correct

53. geerky42

yeah this is correct.

54. anonymous

ah ok thanks @geerky42

55. anonymous

srry i just like to go over all my test answers before submitting them man

56. geerky42

you also are correct about $$(x-4)^2$$ part.

57. anonymous

thanks i think i have the rest right ill make another thread if i need help man

58. geerky42

OK no problem