exam Maths Puzzle Numerical Ability

2/x^2-16y^2 - 1/x^2-3xy-4y^2
This is a fraction and I need to perform the indicated operations. I am lost could you please help?

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exam Other Question

The height h in feet of an object after t seconds is given by the function
h = -16t2 + 30t + 8. How long will it take the object to hit the ground? Round your answer to the nearest thousandth.

Thanks in advance A boat travels 24 mi upstream in 3 hrs. then it takes 3 hrs to go downstream at 36 mi downstream, Find the speed of boat in still water and the speed of the current. (using two unknowns, write two equations and solve.)

>>>>>>>>>>>>>THANKS IN ADVANCE