Решить 2 уравнения, ! 9 + x^2 = 6x 3y^2 + 4y = 4

9 + x² = 6x,

х² - 6х + 9 = 0,

Д = (-6)² - 4*1*9 = 36 - 36 = 0,

х = 6/2*1 = 6/2 = 3,

3y² + 4y = 4,

3у² + 4у - 4 = 0,

Д = 4² - 4*3*(-4) = 16 + 48 = 64,

у1 = (-4+8)/2*3 = 4/6 = 2/3,

у2 = (-4-8)/2*3 = -12/6 = -2