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The square of the sum of twice a number and 3 is equal to 81 .
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The square of the sum of twice a number and 3 is equal to 81 .

User Timidboy
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Answer: x1= -6 , x2= 3

Explanation:

The square of the sum of twice a number and 3 is equal to 81 .-example-1
User Longsight
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