3x2 - 6x - 5 = 0D = b2 - 4acD = 36 + 60 = 96 = (4√6)^2
x1,2 = -b ± √D/2ax1 = 6 + 4√6/6 = 3 + 2√3/3x2 = 6 - 4√6/6 = 3 - 2√6/3ответ: x1 = 3 + 2√6/3 ; x2 = 3 - 2√6/3
x=1+КОРЕНЬ2
x=1+4
x=5
3*(1+√2)^2-6*(1+√2)-5=3+6√2+6-6-6√2-5=-2
^2 - квадрат
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
3*(1+√2)^2-6*(1+√2)-5=3+6√2+6-6-6√2-5=-2
^2 - квадрат