A bank loaned out $14,000, part of it at the rate of 7% per year and the rest at 17% per year. If the interest received in one year totaled $1500, how much was loaned at 7%? How much of the $14,000 did the bank loan out at 7%?

involving rational functions, square roots, and more complicated forms. In this article  completing the square—it even explains the origin ... In the world of geometrical algebra, simple quan- tities, whether ... way that quadratic problems are set up. For exam- ple, if we want to solve the equation x2 + 5x – 36 = 0 geometrically

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