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y = x + 3
y = x² + y - 3
y = x + 3
x + 3 = x² + (x + 3) - 3
y = x + 3
x + 3 = x² + x
-x² - x = -x - 3
-x² = -x + x - 3
-x² = -3 \*(-1)
x² = 3
(x + √3)(x - √3) = 0
x = √3 v x = √3
x₁ = -√3
x₂ = √3
y₁ = 3 - √3
y₂ = 3 + √3
{x₁ = -√3
{y₁ = 3 - √3
{x₂ = √3
{y₂ = 3 + √3
y=y-3^2+y-3
-y=-3^2-3
-y=9-3
-y=6/:(-1)
y= -6
x=-6-3=-9