SOLUTION: Find factors that when multiply they give you -110 and when you add they gave you -30

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Question 1043972: Find factors that when multiply they give you -110 and when you add they gave you -30
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Numbers x and y follow through your description to give this system:
system%28xy=-110%2Cx%2By=-30%29


y=-x-30
-
x%28-x-30%29=-110
-x%5E2-30x=-110
x%5E2%2B30x=110
x%5E2%2B30x-110=0

Discriminant: 30%5E2-4%2A1%2A%28-110%29=900%2B440=1340
which is 2%2A67%2A2%2A5=2%2A2%2A5%2A67;

highlight%28x=%28-30%2B-+2sqrt%285%2A67%29%29%2F2%29
You can find the y value corresponding to each of these x values.