exam Maths Puzzle Numerical Ability

My question is -x^2 (or negative x squared). If x=6, is the answer -36?
How about -3x^2 (or negative 3 x squared). If x=6, is the answer -108?

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exam Other Question

Find the vertices and asymptotes of the hyperbola given by:

(x^2/25)-(y^2/100)=1

Thanks a lot for your help!!!! currently pete is three times older than his son the sum of their ages is 80 how old are each of them