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

x^2 - 2x - 2.5 =
x^2 - 2x + 1 - 3.5 =
(x - 1)^2 - 3.5 =
(x - 1 + √3.5)(x - 1 - √3.5)

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Answer #1| 08/02 2014 10:5666 %