exam Maths Puzzle Numerical Ability

What is the maximum value of q(x) = -2(x + 4)2 + 23?

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exam Other Question

Give an example of an integer that is not a natural number.

Give an example of a real number that is not a rational number

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Thanks Verify that (sec θ/sin θ)(cot θ/csc θ)= csc θ is an identity.

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