ans = Its wrong I tried a4-1+7a2+16
Originally Posted by zbest1966 (a2+1)2-7(a2+1)+10 There are no radicals here. Did you make a mistake when typing the problem?
Anyway, this is a quadratic in form. Let . Then .
Now factor that trinomial on the right, and then substitute for to get everything back in terms of .
a^4 + 1-7a^2-7+10
Originally Posted by zbest1966 a^4 + 1-7a^2-7+10
Im stuck Did you not read what I wrote? We have a quadratic in . You don't need to multiply everything out. And if you were to multiply everything out, you're doing it wrong: .
I've shown you how to reduce the problem to factoring . Can you factor this trinomial?