please someone solve this
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which grade question is this ?
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Step-by-step explanation:
X+1/X=4
(X+1/X)²=4²
X²+2(X)(1/X)+1/X²=16
X²+2+1/X²=16
X²+1/X²=16-2
X²+1/X²=14
and now
X²+1/X²=14
(X²+1/X²)²=14²
X⁴+2(X²)(1/X²)+1/X⁴=196
X⁴+2+1/X⁴=196
X⁴+1/X⁴=196-2
X⁴+1/X⁴=194
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