exam Maths Puzzle Numerical Ability

solve by using the quadratic formula and write your answeres in radical form.
x^2=-5x-5

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exam Other Question

What is the largest possible solution to the following: 14x^2+23x=-3 Walt made an extra $10,0000 last year from a part-time job. He invested part of the money at 8% and the rest at 7%. He made a total of $760 in interest. How much was invested at 7%?