exam Maths Puzzle Numerical Ability

divide and simplify

z^2-49/z /z+7/z+9 this is a fraction divided by a fraction

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exam Other Question

Two jeeps at a 90 degree angle to each other try to pull a car out of the snow. If one jeep exerts a force of 600lbs. and the other exerts a force of 800lbs , what is the resulting force on the car stuck in the snow? Find the equation of a circle which passes through the origin and whose center
is at the point (-1,1).