exam Maths Puzzle Numerical Ability

Please help factor the following

y^2 - 6y + 9

This is what I have: (y- 3)^2

Thanks,

Lackinmath

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The denominator of a certain fraction is three more than twice the numerator. If 7 are added to both terms of the fraction, the resulting fraction is 3/5. Find the original fractio I am not sure if I am doing this problem correctly could I please have some help. The additive inverse of a number divided by twelve is the same as one less than three times its reciprocal. Find the number. I have x+2x=3/10 x=1/10
Thank you.