Question

Х(в квадрате)+12х-5=0

Answer 1

х² + 12х - 5 = 0,
Д = 12² - 4*1*(-5) = 144 + 20 = 164,
х1 = (-12 + √164) / 2*1 = (-12 + 2√41) / 2 = -6 + √41,
х2 = (-12  √164) / 2*1 = (-12 - 2√41) / 2 =  -6 - √41,