book Maths Puzzle Numerical Ability

I need to solve 2m^2+9m+7 by factoring.
thanks for your help!

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book Other Question

You are flying in an open plane at an altitude of 2304 feet and you drop a Coca Cola bottle out of the window. The bottle will hit the ground after _?_ seconds. I need so much help on subtracting square roots. The question is : find the differnece of square root of 288 and square root of 72. please help