exam Maths Puzzle Numerical Ability

Find a quadratic equation with roots ( 4 + i ) and (4 - i ). PLEASE!!!

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exam Other Question

(e^-X)(X^5)/5! = .174785

Solve for X

Answer should be 2.5, but I need to know the steps for solving powers in equations.
Thank you. two light houses are located on the north-south line. from light house a, the bearing of a ship 3742 meters away is 129 degrees43'. from light house b, the bearing of the ship is