Решите уравнение -y^2+6=0
- y^2 + 6 = 0 - y^2 = - 6 | (-1) y^2 = 6 | V y = +/- V6 --------------------------------- - ( -V6)^2 + 6 = 0 - 6 + 6 = 0 - (V6)^2 + 6 = 0 - 6 + 6 = 0
- y² + 6 = 0 y² - 6 = 0 y² = 6 y = √6 y = - √6