exam Maths Puzzle Numerical Ability

How do you complete a square? Ex: M to the second power - 20m.

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exam Other Question

1)2x-5/(x-2)(x+6)over/divided by x^-2x+1/(x-2)(x+6)=?

2)4ab*b*b*b*b/a+b/6a^b*b*b*b=? Explain the effect of a rise in general market interest rates on an investor who is holding notes. Give an example.