y' = [(x-3)'(x+2) - (x-3)(x+2)'] / (x+2)²
y' = [1*(x+2) - (x-3)*1] / (x+2)²
y' = (x+2 - x + 3) / (x+2)²
y' = 5 / (x+2)²
y'(-3) = 5 / (-3+2)² = 5 / (-1)² = 5
y(-3) = (-3-3) / (-3+2) = -6 / -1 = 6
y = y'(x₀) * (x - x₀) + y(x₀)
y = 5 * (x - (-3)) + 6
y = 5 * (x + 3) + 6
y = 5x + 15 + 6
y = 5x + 21
Ответ: 4) y=5x+21