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What is the answer to x-y=-3?
Update:
I am trying to solve the following question. And cant figure this first part. The question is:
The difference of two numbers is - 3, their product is -88.
2 Answers
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- Anonymous1 decade ago
x - y = -3 (1)
x * y = 88 (2)
From (1) we have x =y - 3
Substitue iit in (2)
x * (x - 3) = 88
x^2 -3x =88
x^2 -3x - 88 =0,
x = 3/2 +9.5 =11 (1solution) y= x-3 = 8
x = 3/2 - 9.5= -8 (2 solution) y= x-3 = -11
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