exam Maths Puzzle Numerical Ability

Whats the solution for (-x|x|)1/2.(1/2 is square root power)

I answered x but the solution says -x

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exam Other Question

True or false?

The direction of the inequality symbol must be reversed when both sides of an inequality are multiplied or divided by a positive number.
An oil tanker and a cruise ship leave port at the same time and travel straight-line courses at 10 mi/h and 25 mi/h, respectively. Two hours later they are 40 mi apart. What is the angle between their courses?