Physics Problem- Work and Energy -Calculus Based Problem- Solving for Speed Given Force and Distance

A net force along the x-axis that has x-component Fx = -12.0 N + (0.300 N/m^2)x^2 is applied to a 5.00 kg object that is initially at the origin and moving in the -x-direction with a speed of 6.00 m/s. What is the speed of the object when it reaches the point x = 5.00 m?
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