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यदि `x=root(3)(5)+2` है तो `x^(3)-6x^(2)+12x-13` का मान ज्ञात करें।A. `-1`B. `1`C. 2D. 0 |
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Answer» Correct Answer - D `x=root(3)(5)+2` `impliesx-2=root(3)(5)` Take cube on both sides `implies (x-2)^(3)-(root(3)(5))^(3)` `implies x^(3)-8-6x^(2)+12x=5` `:. x^(3)-6x^(2)+12x-13=0` |
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