Question

if x+1/x
$= 4$
then find value of x²+1/x²​

Answer 1

Answer:

$x + \frac{1}{x} = 4 \\ = > x ^{2} + 1 - 4x = 0 \\ = > {x}^{2} - 4x + 1 = 0 \\ = > x = \frac{ -( - 4) \binom{ + }{ - } \sqrt{16 - ( - 4 \times 1 \times 1} }{2 \times 1} \\ x = \frac{4 + - \sqrt{16 + 4} }{2} \\ x1 = (4 - \sqrt{20} ) \div 2 \\ x2 =( 4 + \sqrt{20} ) \div 2 \\ put \: the \: any \: one \: value \: of \: x \: in \: ques$