exam Maths Puzzle Numerical Ability

How do you find equations for polynomials when only given their graphs??

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exam Other Question

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



1/(1.2.3.0 +1/(4.5.6)+1/(7.8.9)+.....
One of two supplementary angles is 30 degrees more than twice the other.
Find the angles.

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