exam Maths Puzzle Numerical Ability

I need help answering this question. I really do not understand.

If two numbers are opposite of each other, are their reciprocals also opposite of each other?

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exam Other Question

Expand log4[(3(5x - 6)2)/(3x3(x + 2)2

A 2log4(5x - 6) - 3log4(x) - 2log4(x+2)

B (2log4(15) + 2log4(x) - 2log4(18))/(log4(3) + 3log4(x) + 2log4(x) + 2)

C log445x-32- log427 How do you make a equation that is parellel to a given equation?