book Maths Puzzle Numerical Ability

what happens if you have x squared times x squared?

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book Other Question

I am trying to remember how to do radical algebraic expressions and if you could just give me a sample that would be great an example problem is

150 over (square root sign) 300 and you have to simplify it.

PLEASE HELP Tim is twice as old as his son. In 6 yrs Tim�s age will be three times what his sons age was 6 years ago. How old is Tim�s son now?

thank you