Question

найдите дискриминант плиз. x^2-12x+20=0

Answer 1

D = ( 12 )^2 - 4 * 1 * 20 = 144 - 80 = 64

Answer 2

D=b² - 4ac = ( -12)² - 4 * 1 * 20 = 144 - 80 = 64
√D=8
x1=12+8 / 2 = 10
x2= 12 - 8 / 2 = 2 
Ответ:10;2.