exam Maths Puzzle Numerical Ability

Use the quadratic formula to solve the following equations. Show all major steps involved and leave solutions in radical form (when applicable).

b: 2x^2 - 5x = 3
c: 5x^2 - 2

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exam Other Question

Can you help??? Simply the following:
(3a^2)^-2

and
6x^-2 divided by x^-3

Thanks for helping!! Mitch is at the top of Grizzly ski run. His brother bill is looking up the hill from the ski lodge which 200 feet away at an angle of 45. What is the height of the ski run?