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Rational and Irrational Numbers — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSRational and Irrational Numbers1 Mark
MCQ
If $x=5+2 \sqrt{6}$, then $x^2+\frac{1}{x^2}=$
  • ✓
    98
  • B
    142
  • C
    49
  • D
    138
✓

Answer

Correct option: A.
98
A

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