Two marks example problems III — task. Mathematics State Board, Class 10.

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1. Represent the function \(f(x) = \sqrt{2x^2 - 5x + 3}\) as the product of two functions.

2. Find \(k\) if \(f \circ f(k) = 5\) where \(f(k) = 2k - 1\).

The value of \(k\) \(=\)

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8. Two marks example problems III