Question

if x+1/x=3,find the value of x^4+1/x^4​

Answer 1

Explanation:

x+1/x=3

squaring on both sides

x^2+1/x^2+2=9

x^2+1/x^2=7

Again squaring on both sides

x^4+1/x^4+2=49

Finally

x^4+1/x^4=47

Answer 2

Answer:

$x + 1 \div x = 3 \\ \\ \\ {x}^{4 } + 1 \\ {x}^{4} \\ \\ \\ = 1 \div x \\ = 2 \\ \\ {x}^{4} + 1 \\ {x}^{ 4} \\ \\ = 17$

Explanation:

aswer is 17