## LaynaMae Group Title HELP PLEASE !! Medal will be rewarded ! 10 months ago 10 months ago

1. LaynaMae Group Title

2. ganeshie8 Group Title

plugin the numbers into the given equation ?

3. ganeshie8 Group Title

$$\large \sqrt{x-y} + m = d$$

4. ganeshie8 Group Title

y is last two digits of ur birth year (u may fake if u want ;) ) m is month d is day

5. LaynaMae Group Title

Okay

6. ganeshie8 Group Title

wat do u get for the equation ?

7. LaynaMae Group Title

Let me work it out

8. ganeshie8 Group Title

okie

9. LaynaMae Group Title

I can't get the answer .. I don't know how to work this out ! :(

10. ganeshie8 Group Title

if u can show me wat do u have... maybe i can help :)

11. ganeshie8 Group Title

did u plugin the values in equation ?

12. LaynaMae Group Title

I don't know how to work it out .. Like I don't know where to start . I'm not good with radicals . All I did was try to find a way to work it out online but I couldn't find anything to help . Do I start with what's in the radical ?

13. ganeshie8 Group Title

nope, have u read the question ? it wants u to put ur date of birth in the given equation, and solve x

14. ganeshie8 Group Title

$$\large \sqrt{x-y} + m = d$$ ^

15. LaynaMae Group Title

Okay

16. ganeshie8 Group Title

put the year u born in that place

17. ganeshie8 Group Title

which year ?

18. LaynaMae Group Title

Don't I use the values given in the question ?

19. LaynaMae Group Title

Ohhh nevermind , I just read the question wrong . My bad

20. ganeshie8 Group Title

No, those values are for ur great great grandpa Nikola Tesla.... they're not urs lol

21. ganeshie8 Group Title

cool :)

22. LaynaMae Group Title

Okay so I was born in 96

23. ganeshie8 Group Title

$$\large \sqrt{x-96} + m = d$$ ^

24. ganeshie8 Group Title

there it goes ! wat about month and date

25. ganeshie8 Group Title

i feel like im interviewing u lol

26. LaynaMae Group Title

Haha month is 4 and day is 22

27. ganeshie8 Group Title

thanks for giving it one shot :)

28. ganeshie8 Group Title

$$\large \sqrt{x-96} + 4 = 22$$

29. LaynaMae Group Title

Alright so now what to do :o

30. ganeshie8 Group Title

solve for x

31. ganeshie8 Group Title

start by subtracting 4 both sides

32. LaynaMae Group Title

Okay

33. ganeshie8 Group Title

$$\large \sqrt{x-96} + 4 = 22$$ subtract 4 both sides $$\large \sqrt{x-96} = 18$$

34. LaynaMae Group Title

18

35. ganeshie8 Group Title

Yes ! next, square both sides

36. LaynaMae Group Title

You mean square 96 and 18 ?? :o

37. ganeshie8 Group Title

$$\large \sqrt{x-96} + 4 = 22$$ subtract 4 both sides $$\large \sqrt{x-96} = 18$$ square both sides $$\large (\sqrt{x-96})^2 = (18)^2$$

38. ganeshie8 Group Title

like this..

39. ganeshie8 Group Title

since u r not happy wid radical, we're killing it by squaring both sides !

40. ganeshie8 Group Title

$$\large \sqrt{x-96} + 4 = 22$$ subtract 4 both sides $$\large \sqrt{x-96} = 18$$ square both sides $$\large (\sqrt{x-96})^2 = (18)^2$$ $$\large x-96 = 324$$

41. LaynaMae Group Title

Oh okay !

42. ganeshie8 Group Title

wats our next step ?

43. LaynaMae Group Title

Add 96 to both sides ?

44. ganeshie8 Group Title

thats it !

45. LaynaMae Group Title

Okay so that would be 420 ? (;

46. ganeshie8 Group Title

Yes ! good job !!

47. LaynaMae Group Title

Yay :D So that's the answer , correct ? Now what does it mean when it asks if the solution is extraneous ?? :o

48. ganeshie8 Group Title

oh, it asks to check if the solution is extraneous or now.

49. ganeshie8 Group Title

*not

50. LaynaMae Group Title

Yeah , I don't know what that means .

51. ganeshie8 Group Title

its very easy to check, simply put the solution u got for x in the original (ur bday ) equaiton

52. LaynaMae Group Title

Alright

53. ganeshie8 Group Title

ur bday equation :- $$\large \sqrt{x-96} + 4 = 22$$ put x = 420 here, IF this satisfies this equation, then its NOT an extraneous solution.

54. LaynaMae Group Title

I worked it out and I got 420=324 :o

55. ganeshie8 Group Title

careful, check again

56. LaynaMae Group Title

But that's not true , so does that mean the solution IS extraneous ?

57. LaynaMae Group Title

Oh okay ..

58. ganeshie8 Group Title

i want u check again,

59. ganeshie8 Group Title

Checking if x=420 is extraneous solution or not :- $$\large \sqrt{x-96} + 4 = 22$$ put x = 420 $$\large \sqrt{420-96} + 4 = 22$$

60. LaynaMae Group Title

Right

61. ganeshie8 Group Title

Checking if x=420 is extraneous solution or not :- $$\large \sqrt{x-96} + 4 = 22$$ put x = 420 $$\large \sqrt{420-96} + 4 = 22$$ $$\large \sqrt{324} + 4 = 22$$

62. ganeshie8 Group Title

Checking if x=420 is extraneous solution or not :- $$\large \sqrt{x-96} + 4 = 22$$ put x = 420 $$\large \sqrt{420-96} + 4 = 22$$ $$\large \sqrt{324} + 4 = 22$$ $$\large 18 + 4 = 22$$

63. LaynaMae Group Title

Ohhhh okay ! That makes more sense !

64. LaynaMae Group Title

THANK YOU

65. ganeshie8 Group Title

Checking if x=420 is extraneous solution or not :- $$\large \sqrt{x-96} + 4 = 22$$ put x = 420 $$\large \sqrt{420-96} + 4 = 22$$ $$\large \sqrt{324} + 4 = 22$$ $$\large 18 + 4 = 22$$ $$\large 22 = 22$$ TRUE, so x=420 is NOT an extraneous solution.

66. ganeshie8 Group Title

np :) yw !