hi how would I work out the following?

(3(2^2 -2)^2 -10)^2

which brackets do I calculate first please?

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- October 4th 2009, 06:51 AMwolfhoundbrackets within brackets
hi how would I work out the following?

(3(2^2 -2)^2 -10)^2

which brackets do I calculate first please? - October 4th 2009, 07:15 AMe^(i*pi)
- October 4th 2009, 07:48 AMwolfhound
Thanks (Clapping)

- October 4th 2009, 08:03 AMe^(i*pi)
You can also use google calculator to check your answer. Paste the problem into google and hit search

http://www.google.com/#hl=en&source=hp&q=%283%282^2+-2%29^2+-10%29^2&aq=f&aqi=&oq=&fp=e705e53e3f505592 - October 4th 2009, 08:24 AMwolfhoundvalue of x
find value of x if x-2 =5x + 14

more helps please :)

I havent learned how to do these yet I just want to find out how and then I will catch on

Thanks - October 4th 2009, 08:25 AMmathaddict
- October 4th 2009, 08:45 AMwolfhound
- October 4th 2009, 08:51 AMwolfhoundanother find x
How about this one

find value of x if

2x-1/x+2 = 3

and

is 5 a solution of x^2 + 3x-9=(x-4)(x+21)??

If so please explain how I do it

Thanks!!!!! - October 4th 2009, 08:53 AMwolfhound
actually is x =7 the first one...

- October 4th 2009, 09:10 AMmathaddict
- October 4th 2009, 09:14 AMwolfhound
- October 4th 2009, 09:18 AMe^(i*pi)
You seem to have the wrong sign for both of them

by inspection

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For the 2nd one so 5 is not a solution