exam Maths Puzzle Numerical Ability

Determine the vertex of y=xsquared-8x+22.

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exam Other Question

Can you tell me if this is correct?
Find three consecutive integers such that four times the sum of the first and second is 17 more than 7 times the third
1st integer:n
2nd integer:n+2
3rd integer:n+4
4n+7(n+4)+17
Could someone please help me with this word problem? I can never seem to figure these things out.

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