exam Maths Puzzle Numerical Ability

Find two consecutive numbers such that the sum of their squares is 35 more than twice the square of the smaller.

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exam Other Question

Given that (2-y)^3=8-12y+6y^2-y^3 find (2-y)^4

I really dont know how to start it! identify if the following are power functions,if so what are the values of k and p
y=x^3+1