Algebra

Quantitative Aptitude and Numerical Ability (DRDO) (Phase-i and II) DRDO Exam

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If P=3+1/P then the value of P⁴+1/P⁴ is

81

27

120

119

Explanation:

p-1/p=3;
Squaring both sides-
P²+1/p²-2=9; => p²+1/p²=11;
Square again of both sides-
P⁴+1/p⁴+2=121; => p⁴+1/p⁴= 119

By: MIRZA SADDAM HUSSAIN

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