book Maths Puzzle Numerical Ability

factor completely
x^2 - 1/2x - 5/64

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book Other Question

I just can not figure out how to set this one up.....and I need the answer quick. Please Help Me!!!!!

Ed and Dave are going to divide a cash prize of $14,000 in a ratio of 2 to 5. How much will Dave receive? how shall i find the square root of 169 without using calculator?? please describe briefly..