book Maths Puzzle Numerical Ability

Please can I know the answer to this equation 4x2-5x+9=0.

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book Other Question

order the following fractions from least to greatest:2/25,7/24,3/17,1/11.
I know I need to find the LCD, but these are large numbers!
Thank you for the help!
find the equation for the parabola with focus (1,4) and directrix x=-3