Myanmarsangp Myanmarsangp

22-07-2022
Mathematics

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Three more than twice a number is five less than the square of the number.What is the number?

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alex255489 alex255489

22-07-2022

Let the number be x.

2x+3= x^2-5
2x-x^2+8=0
x^2-2x-8=0
(x-4)(x+2)=0
x=4 OR x=-2

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