Помогите,срочно: (3-2i)(5+4i)-7i+1
15+12i-10i-8i²-7i+1 = 0 -8i²-5i+16=0 8i²+5i-16=0 D = 25-4 * 8 * (-16) = 25 + 32*16 = 25+512 = 537 x1 = -5+√537 / 16 x2 = -5-√537 / 16 Ответ = -5+√537 / 16 и -5-√537 / 16