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

complete the factorizaTION OF EACH BINOMIAL
A TO THE SECOND POWER - A = -A( )
Can you please show a breakdown to this? So I understand how to do these types of algebra problems? Thanks 16-5(3t-4)=8(-2t+11)