exam Maths Puzzle Numerical Ability

PLEASE HELP:
Write 3-{-36 in standard form (they dont have the symbol for what i needed which was in the shape of a divisional sign so i used {

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exam Other Question
If x to the second= x to the third, give the two possible values for x Simplify by removing the factor of 1.

4ab/a^2-b^2 - a-b/a+b