यदि (9x − 7)3 + 8(5 − x)3 − 27(4x + 11)3 = 18(7 − 9x)(5 − x)(4x + 11) है, तब  \({{x^4}+{x^2}+1}\over{{x^2}-x+1}\) का मान है:

1
33
2
30
3
31
4
27

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