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The value of x for which `|{:(x,2,2),(3,x,2),(3,3,x):}|+|{:(1-x,2,4),(2,4-x,8),(4,8,16-x):}|gt33` isA. `0ltxlt1`B. `-(1)/(2)ltxlt(1)/(2)`C. `xlt-(1)/(7)`D. `xgt1` |
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Answer» Correct Answer - C::D `|{:(x,2,2),(3,x,2),(3,3,x):}|+|{:(1-x,2,4),(2,4-x,8),(4,8,16-x):}|ge33` `implies21x^(2)-18x+30ge33` `implies21x^(2)-18x-3ge0` `implies7x^(2)-6x-1ge0` `implies7x^(2)-7x+x-1ge0` `(7x+1)(x-1)ge0` `impliesx in (-infty,(-1)/(7))cup(1,infty)` |
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