Description
Use a quadratic equation to find two numbers that have a sum of 9 and a product of 20.
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Explanation & Answer
Please here your equation is:
Z^2 - 9Z +20 =0
using the standard formula, I get:
Z = (9 +/- sqrt(81-80)/2 = (9 +/- 1)/2
so your numbers are:
Z = 5, and Z = 4
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