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# Maths past paper question watch

1. heres the question

the expression x^2 - 8x + 21 can be written in the form ( x - a )^2 + b for all values of x.

find the value of a and the value of b?

so confused, it probs looks rlly easy to u lol
2. (Original post by mariam687)
heres the question

the expression x^2 - 8x + 21 can be written in the form ( x - a )^2 + b for all values of x.

find the value of a and the value of b?

so confused, it probs looks rlly easy to u lol
Complete the square.
3. (Original post by usycool1)
Complete the square.

oh yh loooooool thanks
4. (Original post by mariam687)
oh yh loooooool thanks
No worries

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