exam Maths Puzzle Numerical Ability

Write a description of the strategies you used in solving the problem of creating an equilateral triangle using only Euclid's five rules.

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exam Other Question

Hi,

My brother is 13, and just want to query this question.

9y - 3y = 6y.

Is this correct? or does it subtract the y aswell meaning the answer would be:

9y - 3y = 6.

Thanks!!
Factor. Please help. Thanks

(t^2+2)^2+4(t^2+2)-32