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Math

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The sum of a number and its square is 90. Find the number.
Answer:

Sagot :

Suzainneninogo Suzainneninogo

Answer:

Answer:

10 or 9

Description for Correct answer:

Let the number be x

Given x+x²=90

• x²+x−90=0

• (x+10)(x-9) = 0

• x = -10,9

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