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Readme [11.4K]
4 years ago
9

The square of 9 less than a number is 3 less than the number. What is the number?

Mathematics
2 answers:
Deffense [45]4 years ago
4 0
You have to create the equation.
The number is a variable (x).
\sqrt{9} < x = 3 < x
Over [174]4 years ago
4 0

Answer:

The number is 12 or 7.

Step-by-step explanation:

According to question,

The square of 9 less than a number is 3 less than the number.

i.e. (x - 9)^2 = x - 3

Solving the equation,

x^2 - 18x + 81= x - 3

x^2 - 19x + 84 = 0

(x - 12)(x - 7) = 0

(x - 12)=0,(x - 7) = 0

x=12,7

Therefore, The number is 12 or 7.

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