exam Maths Puzzle Numerical Ability

Given 3x^2+(k+2)x=-3, determine the value(s) of k so that the equation has real and equal roots.

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exam Other Question

A car travels on the freeway at an average speed of 54 miles per hour,How many miles does it travel in 3 hours 40 minutes a water tank can be filled in 20 hours by an inlet pipe and emptied in 25 hours by an outlet pipe. how long will it take to fill the tank if both pipes are left open?