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What is the sum of two numbers 20 the product of the numbers is 75?
Wiki User
∙ 15y ago
If you mean that the sum of the two numbers is 20 and the product is 75, then
X+Y=20 and XY=75
solving for Y and substituting: Y=20-X and XY=X(20-X)
then X(20-X)=75 and 20X-X2=75
(20X-X2)-(20X-X2)=75-(20X-X2)
then X2-20X+75=0
factoring (X-5)(X-15)=0, so X=15 or X=5
if X=5, then Y=75/X=15
if X=15, then Y=75/X=75/15=5
Wiki User
∙ 15y ago
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