Question

If x - 1/x = 5 find the value of x^4+ 1/x^4.... Please answer it Asap.... I urgently need it plzzz.... I beg you'll...plz answer this question ASAP guys!!​

Answer 1

X+1/x = 5

(x+1/x)² = x²+1/x²+2

(5)² = x²+1/x²+2

25-2 = x²+1/x² => 23

(x²+1/x²)² = x⁴+1/x⁴+2

(23)² = x⁴+1/x⁴+2

529-2 = x⁴+1/x⁴

527 = x⁴+1/x⁴