Question

if x²+1/x²=4 find x⁴+1/x⁴​

Answer 1

Answer:

x²+1/x²=4

Squaring both sides,

(x²+1/x²)=4²

(x²)²+(1/x²)²+2×x×1/x=16

x⁴+1/x⁴+2=16

x⁴+1/x⁴=16-2

x⁴+1/x⁴=14