exam Maths Puzzle Numerical Ability

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: _____

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exam Other Question

Find the maximum value of C=2x+y on the region determined by the constraints:

{x + y <=6
{0 <= x <= 4
{0 <= y <= 4
(4^(1/3))/(8^(1/5))=?