exam Maths Puzzle Numerical Ability

Please help me solve this using the quadratic formula:

(x+3)(x-4)=-5

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exam Other Question

7 /x / /2y (7 sqrt x divided by sqrt 2y)

thanks so much!!! How much will you have at the end of 5 years in a european vacation account if you deposit $200 a month in an account that is paying a nominal 12 percent per year, compounded month