exam Maths Puzzle Numerical Ability

I need your help how do you solve x^2-2x-9=0

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exam Other Question

Explain how the functions of exponents and logarithms relate to each other. Give exact and approximate solutions to 3 decimal places.

x^2 - 7x + 5 = 0

The exact solutions are: ___________

The approximate solutions to 3 decimals places are: _____