# algebra

posted by Michael

the ratio of ten more than three times a number to the square of the same number is equal to one. what is the number?

1. Reiny

(3x + 10) : x^2 = 1

(3x+10)/x^2 = 1
x^2 = 3x+10
x^2 - 3x - 10 = 0
(x - 5)(x + 2) = 0

x=5 or x = -2

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