Best Answer

a+b = ab = 9

so a(9-a) = 9 = -(a-9/2)^2 +81/4

so a-9/2 = sqrt(45/4) = +- 3/2 sqrt(5)

Therefore the two numbers are (9 + 3 sqrt(5))/2 and (9 - 3 sqrt(5))/2

Q: What two numbers multiply and add up to 9?

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