[bench]

Hey, can someone help me with these 2 questions please.

Given that x = i is a complex solution of the equation...
http://www.edexcel.com/migrationdocu...e_20090617.pdf

Question 1 and 2 please.

[sputum]

Question 1 you should be able to get another solution from the one you've been given (and the nature of the equation and its coefficients)
shouldn't be too bad from there

[BabyMaths]

The coefficients are real so the complex roots come in conjugate pairs. If x=i is a root then so is x=-i.

So we have two factors. (x+i)(x-i). The product of these two gives us a real quadratic factor. x^2+1.



Can you find the other factors?