Please help me out here guys cos so depressed wen i saw the merit list, the change of course form where can i get it in the school, ??

Now the question
x² + (x² - 1)^1/2= 1
(x² - 1)^1/2 = 1 - x²
Squaring both sides and expanding we get
x² - 1 = x⁴ - 2x² + 1
Collecting like terms and simplifying we get
x⁴ - 3x² + 2 = 0
Now this is a polynomial of the 4th degree in even consecutive indices to solve this we divide with a quadrant,
so using the trial method lets take x² - 1
Dividing with this we get,
x² - 2 as the answer
therefore,
(x² - 1)(x² - 2)
In which case

x = +/-1 or the square root of 2

Check:
x² + (x² - 1) = 1
Substituting x = 2^1/2
(2^1/2)² + ({2^1/2}² - 1)^1/2
Gives,
2 +/- 1^1/2
which gives,
2 +/- 1
2-1=1
You can also check the other value yourself for confirmation

Thanks solomon vry much, there are still many other questions that are troubling me
like this one

Make t the subject of the formula

s = ut + 1/2at²

thank you very much ure too good, now i stil have another one, pleeaase,

here it is,

Factorise 9 - 4(a + b - c)²
thanks

Her's the question 

Find the value of B in the equation

b² + 2 + 1/b²= 4

hey cmon dint u download the template at the site, ok, here the link www.unn.edu.ng then scroll down and youll see info on 2009/2010 post ume, click the link there to download

yes you will buy the scratch card for registration but ull have to watch out for announcement of screening for DE candidates, its not yet announced, all these are in the downloaded template in their website

the cutoff still remains 200, its on the the downloaded template

For comfirmed info on FUTO post UME details, please click the link www.futoadmissions.com/exam.asp for bonafide information. do mind futocomm who will hold your scratch card till u come down to owerri

Please go to the website www.unn.edu.ng to download all the info about 2009/2010 post ume screening exercise