Question

9x4-10x2+1=0 памагите плзз

Answer 1

Решение во  вложениях...

Answer 2

пусть $x^2=a$

$9a^2-10a+1=0\ a_{1}=frac{1}{9}\ a_{2}=1$

$x^2 = 1\x=1\x=-1\x^2=frac{1}{9}\x=frac{1}{3}\x=-frac{1}{3}$