Odpowiedź :
Hej!
-3x(6x + 3) - 9(-x - 3) =
= -18x² - 9x + 9x + 27 =
= -18 * 2² + 27 = -18 * 4 + 27 =
= -72 + 27 = -45
Pozdrawiam! - Julka
Hej!
-3x(6x + 3) - 9(-x - 3) =
= -18x² - 9x + 9x + 27 =
= -18 * 2² + 27 = -18 * 4 + 27 =
= -72 + 27 = -45
Pozdrawiam! - Julka