SOLUTION: Two positive numbers have a sum of 8 and a product of 8. What is one of the numbers?

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Question 469975: Two positive numbers have a sum of 8 and a product of 8. What is one of the numbers?
Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=8
xy=8
******
x=8-y
y(8-y)=8
8y-y%5E2=8
y%5E2-8y%2B8=0
x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+
x+=+%288+%2B-+sqrt%28+64-32+%29%29%2F%282%29+
x+=+%288+%2B-+sqrt%28+32+%29%29%2F%282%29+
x+=+%288+%2B-+4sqrt%28+2+%29%29%2F%282%29+
x+=+2%284+%2B-+2sqrt%28+2+%29%29%2F%282%29+
x+=+4+%2B-+2sqrt%28+2+%29+
so the positive would be
x+=+4+%2B+2sqrt%28+2+%29+
PS make sure you copied the problem right