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# Complete The Square Watch

1. This is the question

However the answer in the back of the book is
I don't know what I am doing wrong any ideas.
2. You're right if the question is x^2-x+1
3. (Original post by wcp100)
You're right if the question is x^2-x+1

Their answer seems to be for: x^2-x-1
that wouldn't give +1.25 it would give -1.25
5. No
6. (Original post by zed963)
This is the question

However the answer in the back of the book is
I don't know what I am doing wrong any ideas.
You can check the answer yourself here:

Expand and see what you get.
7. (Original post by zed963)
that wouldn't give +1.25 it would give -1.25
That's a good point, my stupid mistake. Sign error.

x^2-x+1.5
8. (Original post by zed963)
This is the question

However the answer in the back of the book is
I don't know what I am doing wrong any ideas.
the answer at the back is wrong . Your working out is 100% correct.

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