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the square of 9 more than a number is equal to 9 more than the square of the number. what is the number?
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the square of 9 more than a number is equal to 9 more than the square of the number. what is the number?

User DataBach
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1 Answer

1 vote
(x+9)^2 = x^2 +9
x^2 +18x + 81 = x^2 +9
18x = -72
x = -4
User JetPro
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