exam Maths Puzzle Numerical Ability

solve x^2-x-30

and

solve 2x62+8x-16

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exam Other Question

A window washer accidentally drops a bucket from the top of a 64-foot building. The height (h) of the bucket after t seconds is given by the following formula: h=-16t^2+64. How long will it take for the bucket to hit the ground? I get it while shes doing it on the board. I get the math book examples, when it comes to the problems I freeze. It never looks the same as the examples X#$#@!