3) Найдите f(-2), f(5), f(0), если f(x) = x² + 2x

3) Найдите f(-2), f(5), f(0), если f(x) = x² + 2x

• f(-2):
1. Substitute x = -2 into the function: \( f(-2) = (-2)^2 + 2(-2) \)
2. Calculate: \( f(-2) = 4 - 4 = 0 \)
• f(5):
1. Substitute x = 5 into the function: \( f(5) = (5)^2 + 2(5) \)
2. Calculate: \( f(5) = 25 + 10 = 35 \)
• f(0):
1. Substitute x = 0 into the function: \( f(0) = (0)^2 + 2(0) \)
2. Calculate: \( f(0) = 0 + 0 = 0 \)

Ответ: f(-2) = 0, f(5) = 35, f(0) = 0