Ответы и объяснения

2012-04-01T15:42:28+00:00

3x2 - 6x - 5 = 0
D = b2 - 4ac
D = 36 + 60 = 96 = (4√6)^2

x1,2 = -b ± √D/2a
x1 = 6 + 4√6/6 = 3 + 2√3/3
x2 = 6 - 4√6/6 = 3 - 2√6/3
Ответ: x1 = 3 + 2√6/3
 ; x2 = 3 - 2√6/3

 

 

  x=1+КОРЕНЬ2

x=1+4

x=5