If x+1/x=12 and x2-1/x2=15. Find x4-1/x4.

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If x+1/x=12 and x2-1/x2=15. Find x4-1/x4.

If x+1/x=12 and x^2-1/x^2=15. Find x^4-1/x^4.
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What if we don't know the value of x^2-1/x^2

hemlataneware
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Thank You very much for your great explanation Sir🙏🙏
Understood very well

hrishikeshpednekar