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How to factorise x^2-2x-2.5?

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  • How to factorise x^2-2x-2.5?


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Answer #1 | 08/02 2014 10:56
x^2 - 2x - 2.5 = 0.5(2x^2 - 4x - 5) = (x - 2.87083)(x + 0.870829)
Positive: 66 %
Answer #2 | 08/02 2014 09:19
x^2 - 2x - 2.5 = x^2 - 2x + 1 - 3.5 = (x - 1)^2 - 3.5 = (x - 1 + √3.5)(x - 1 - √3.5)
Positive: 60 %

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