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If x=1+(5^1/3)+(5^2/3) ,then find the value of: x^3 - 3x^2 - 12x + 6

Answer» x=1+(5^1/3)+(5^2/3) x=1+(5/3)+(25/3)(Add by taking lcm) x=(3+5+25)/3x=33/3 = 11Finding value of: x^3 - 3x^2 - 12x + 6Put the value of x i.e. 11: =x^3-3x^2-12x+6=(11)^3 - 3 (11)^2 - 12X11 + 6=1331 - 3X121 - 132 + 6=1331 - 363 - 132 + 6=842


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