# SOLUTION: What two numbers added together equals negative 10, but when the same two numbers are multiplied together equals negative 20?

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 Question 258746: What two numbers added together equals negative 10, but when the same two numbers are multiplied together equals negative 20?Answer by Edwin McCravy(8908)   (Show Source): You can put this solution on YOUR website!``` Solve the first for y Substitute for in Multiply through by That doesn't factor so we use the quadratic formula: Make two fractions Two solutions for x and Substituting the first in so one solkution is , ---------------------------- Substituting the second in so the other solution is , But there are really only two numbers, it's just a matter of which you call x and which you call y, or which you call "the first numner" and which you call "the second number". Edwin```