Hi, I have tried this problem a few times.

Fx=ax+b

gx=x^2+x+1

gfx=x^2-5x+7

Not sure where I'm going wrong. A few tips would be appreciated.

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- Apr 23rd 2010, 10:58 PMNeverquit[SOLVED] find a and b? Simple problem
Hi, I have tried this problem a few times.

Fx=ax+b

gx=x^2+x+1

gfx=x^2-5x+7

Not sure where I'm going wrong. A few tips would be appreciated. - Apr 23rd 2010, 11:14 PMharish21
- Apr 23rd 2010, 11:18 PMNeverquitcorrection
yes it should be f(x),g(x) and gf(x)

- Apr 23rd 2010, 11:35 PMharish21
- Apr 24th 2010, 02:39 AMNeverquitupdate
Hi,

I did set the equations together in the first place. Now I have had another look and have solved for b.

Thanks! - Apr 24th 2010, 03:13 AMNeverquitUpdate
From ax^2+ 2abx+b^2+ax+b+1= x^2-5x+7

Set x=0

b^2+b-6=0

(b+3)(b-2)…b=-3,2

For 'A' st b=-3, A=1....or...st b=2, A=-1