Question

помогите решить алгебру

Answer 1

a) Δу = (2×1.2 - 3) - (2×1 - 3) = 2.4 - 3 - 2 + 3 = 0.4

б) Δу = ((-1.99)² + 2) - ((-2)² + 2) = (-1.99)² - (-2)² = (-1.99 - 2)(-1.99 + 2) = -3.99×0.01 = -0.0399