exam Maths Puzzle Numerical Ability

how do i solve n^2-9n+14=0, by factoring?

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exam Other Question

It takes Brad 2 hours to mow his lawn. It takes Gail 3 hours to mow the same lawn. How long will it take them to mow the lawn if they do the job together? I am having difficulty with this problem. Here is what I did but the answer is not correct and I do not know what I am doing wrong. I looked up the problem to make sure that I have