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C4-Partial fractions. Comparing Coeff watch

1. I got ,

when comparing coeff of to find A

I get

Meaning

however the book has it down as

Am i wrong?
2. (Original post by joyoustele)

I got ,

when comparing coeff of to find A

I get

Meaning

however the book has it down as

Am i wrong?
Yeah.

Did the first one in my head but the coeff of x^2 should be 0, not -2, if I’m not mistaken. Check it
3. (Original post by joyoustele)

I got ,

when comparing coeff of to find A

I get

Meaning

however the book has it down as

Am i wrong?
yes you are wrong. if you let x = 0 , B = 4 & C = 2 then you get A = 3
4. (Original post by the bear)
yes you are wrong. if you let x = 0 , B = 4 & C = 2 then you get A = 3
Yh, i should have tried this too.
5. (Original post by joyoustele)
Yh, i should have tried this too.
as a lazy person i would use x = 0 as it is less work
6. (Original post by RDKGames)
Yeah.

Did the first one in my head but the coeff of x^2 should be 0, not -2, if I’m not mistaken. Check it

Coeff of + coeff of C

I know its A=3 now, but i cant see where i went wrong here
7. (Original post by the bear)
as a lazy person i would use x = 0 as it is less work
Yh, I shall start doing that. Ty
8. (Original post by joyoustele)

Coeff of + coeff of C

I know its A=3 now, but i cant see where i went wrong here
Second line. Constant of the expanded quadraric is 4, not 2.
9. (Original post by RDKGames)
Second line. Constant of the expanded quadraric is 4, not 2.
oh.

-TY

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