Question

if x -1/x=5 find the value of x⁴+1/x⁴.​

Answer 1

Answer:

$if \: x = 1 \\ x {}^{4} + 1 \div x {}^{4} \\ =( 1 ){}^{4} + 1 \div (1) {}^{4} \\ = 1 + 1 \div 1 \\ = 1 + 1 \\ = 2 \\ \\ if \: x = 5 \\ 0= x {}^{4} + 1 \div x {}^{4} \\ 0 = (5) {}^{4} + 1 \div (5) {}^{4} \\ 0 = 625 + 1 \div 625$