exam Maths Puzzle Numerical Ability

how do you arrange the terms of the polynomial 3x^2+5xy+2y^2 so that the powers of x are in ascending order????
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exam Other Question

If A can do a job in 5 hrs. and B can do a job in 8 hrs. Together they can do a job in_ hrs. Determine the value of "r" so the line that passes through each pair of points has the given slope

(6,3)(r,2) slope= 1/2