book Maths Puzzle Numerical Ability

What is -2,-1, and 0 if x is -3 and y is -2 and x is 1 and y is 6?

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book Other Question

Please help me to simplify this problem:
(7/2)^2
Thanks! Solve the logarithmic equation. Round the result to the three decimal places if necessary.

2log10 x = 10