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Shashank Shah

· started a discussion

· 1 Months ago

Please suggest some better technique for above question

Question:

If  x+7x=1   , find the value of  x2+ x +7x3-x2   .

Options:
A)

27    

B)

-27    

C)

– 2

D)

-72    

Solution:

Ans: (b)

  

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