## moongazer 3 years ago let x=4 -x^4 = -256 is this correct?

1. moongazer

not -x^4 = 256 because this -x^4 means -1(4)^4 not (-4)^4

2. moongazer

Is it correct?

3. Yahoo!

nop

4. Yahoo!

it is 256

5. TheViper

(-x)^4=256 & -(x^4)=-256

6. Yahoo!

becoz instead of x u r giving 4

7. TheViper

Does that help @moongazer ??

8. Yahoo!

-4 * -4 * -4 * -4=

9. TheViper

Becoz according to BODMAS rule first we solve brackets :)

10. moongazer

so -x^4 = -256 is correct right?

11. Yahoo!

but it is like this (-4)^4

12. moongazer

But there is no parenthesis ?

13. moongazer

so it is like -1(x)^4

14. Yahoo!

or wat is -x*-x*-x*-x

15. Yahoo!

nw give x=4

16. Yahoo!

17. TheViper
18. Yahoo!

just think like that

19. Yahoo!

-x^4=-x*-x*-x*-x

20. moongazer

isn't that \[-4^2 \neq (-4)^2\]

21. moongazer

???

22. Yahoo!

why both r same

23. moongazer

no it is not

24. Yahoo!

why>>>>>>

25. moongazer
26. Yahoo!

ok.....@moongazer nw tell is this correct or not -x^4=-x*-x*-x*-x

27. moongazer
28. Yahoo!

@moongazer

29. moongazer

That is wrong I think.

30. lgbasallote

-x^4 = -256 for the record...

31. apple_pi

indeed

32. moongazer

that's the question I am asking :)

33. lgbasallote

so i guess it's down to a 2-on-2

34. Yahoo!

why //

35. Yahoo!

@lgbasallote -x^4=-x*-x*-x*-x

36. apple_pi

@Yahoo! this is -(x^4) not (-x)^4

37. lgbasallote

because the exponent just affects the nearest base

38. Yahoo!

look his question it is just -x^4

39. lgbasallote

exactly

40. lgbasallote

the ^4 is just on x...not on - too

41. moongazer

because -x^4 is like -1(x)^4 not (-x)^4 I think this is the explanation?

42. Yahoo!

i would say if (-x)^4=256 & -(x^4)=-256

43. lgbasallote

-x^4 = -(x^4)

44. Yahoo!

so wat is -2^2

45. lgbasallote

-4

46. moongazer

@Yahoo! (-1)(4) so -4

47. apple_pi

-2^2 = -1 (2^2) = -1 * 4 = -4

48. lgbasallote

let this be an end to these skepticisms http://www.wolframalpha.com/input/?i=-4%5E4

49. apple_pi

when there is a minus, do all the stuff before minusing

50. Yahoo!

hey ..... it is like this (-x)^4=256 & -(x^4)=-256

51. Yahoo!

nop visit http://www.wolframalpha.com/input/?i=%28-4%29^4

52. Yahoo!
53. Yahoo!

(-x)^4=256 -x^4 = -256 ................ agreed

54. lgbasallote

lol

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