x(7 - x) + (x + 2)^2 = 7x - x^2 + x^2 + 4x + 4 = x^2 - x^2 + 7x + 4x + 4 = 11x + 4;
При x = -0.5;
11 * (-0.5) + 4 = -5.5 + 4 = -1.5.
x(7 - x) + (x + 2)^2 = 7x - x^2 + x^2 + 4x + 4 = x^2 - x^2 + 7x + 4x + 4 = 11x + 4;
При x = -0.5;
11 * (-0.5) + 4 = -5.5 + 4 = -1.5.