Question

9y^2-1=0
Дам 30 баллов

Answer 1

$9y^2-1=0\9y^2=1\\ y^2=dfrac{1}{9} \\ y=pm dfrac{1}{3}$

Answer 2

Решение:

$9{y}^{2} - 1 = 0$

$9 {y}^{2} = 1$

${y}^{2} = frac{1}{9}$

$y = + - frac{1}{3}$

Ответ: y= +- 1/3