Question

If x2×1/x2=23,find x4+1/x4

Answer 1

Answer:

x^41/x^4

=(x^2+1/x^2)^2+2×x^2+1/x^2

=(23)^2+2

=529+2

=531

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Answer 2

Answer:

x⁴ + 1/x⁴ = a²-2

so

(23)²-2

529-2= 527