the general form of quadratic equation is ax^2+bx+c therefore the formula for factorisation is =-b+(or)-sqrt(b^2-4ac)/2a on applying this formula we get the roots as:1/2+(or)-sqrt(5)/2
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2(x^2 - 8)
(x - 2)(2x + 7)
(2x - 9)(2x - 9) or (2x - 9)2
(x + 3)(3x - 2)
Factor out a 22(X2 + X - 12)2(X - 3)(X + 4)===========