exam Maths Puzzle Numerical Ability

Evaluate b^2-2bc+c^2 if b=3 and c=-2

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will someone please answer this question: what is the standard form of x=2/7+y? i have looked everywhere for what standard form is and i am not getting anywhere! thank you There are two boxes one marked A and one marked B each box contains either a million $ or a deadly snake that will kill you instantly. On box A there is a sign that reads At least