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If x=1+(5^1/3)+(5^2/3) ,then find the value …

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

    • Posted by Hanshika (Honey) 3 years, 8 months ago

    CBSE > Class 09 > Mathematics
    • 1 answers

    Shreya Mittal 3 years, 8 months ago

    x=1+(5^1/3)+(5^2/3) x=1+(5/3)+(25/3) (Add by taking lcm) x=(3+5+25)/3 x=33/3 = 11 Finding value of: x^3 - 3x^2 - 12x + 6 Put 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

    4Thank You

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