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Bt L6620 | |
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Answer» x - 1 + 1/x = 6x^2 - x + 1 = 6xx^2 - 7x + 1 = 0 According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by : - B ± √B^2-4ACx = ———————— 2A Accordingly, B^2 - 4AC = 49 - 4= 45 Applying the quadratic formula : 7 ± √45 x = ————— 2 Two real solutions: x = (7+√45)/2= (7+3√ 5 )/2orx = (7-√45)/2 = (7-3√ 5 )/2 |
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