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Suppose that a is a nonzero constant for which the equation ax^2 + 20x + 17 = 0 has only one solution. Find this solution.

Aug 4, 2021

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You can use the quadratic equation to solve this.

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$

Think about it.  When will this have exactly one solution?

Aug 4, 2021