Question

si: x+1/x=3 calcular E= x^2+x^-2

Answer 1

Explicación paso a paso:

x+1 = 3x

1 = 2x

1/2= x

E=

$\frac{1}{2} ^{2} + \frac{1}{2}^{ - 2}$

1/4 + 4

17/4