Найти значение выражения 5x(x-3)-(x-2)^2 при x=-3

5x * (x – 3) – (x – 2)^2 = 5x * x – 5x * 3 – (x^2 – 4x + 4) = 5x^2 – 15x – x^2 + 4x – 4 = 5x^2 – x^2 – 15x + 4x – 4 = 4x^2 – 11x – 4. x = -3; 4 * (-3)^2 – 11 * (-3) – 4 = 4 * 9 + 33 – 4 = 36 + 33 – 4 = 69 – 4 = 65.