exam Maths Puzzle Numerical Ability

sqrt(2+sqrt(2-sqrt(2+x))) =x



1/(1.2.3.0 +1/(4.5.6)+1/(7.8.9)+.....

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exam Other Question

Solve in tems of x?

3^(x/2) + 2^x > 25
How do you find equations for polynomials when only given their graphs??