exam Maths Puzzle Numerical Ability

i need to find out the steps in equation of a line.thankz

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exam Other Question

I am just trying to check over my answer to this question. I have that it is PRIME so therefore the polynomial is NOT factorable. The equation in question is 10-9y-2y^2 Find all sets of three consecutive multiples of 11 for which the sum of the lesser numbers is greater then 100 and the sum of the two greater numbers is less than 200