Всем решить 1)разложите на множители квадратный трехчлен ! 1.xв квадрате + 12х+6=0 2.хв квадрате-10х+16 3.2хв квадрате +х-1 4.2xв квадрате -3х-2 за ранее !
imancom2005
2
16.07.2019 01:20
0
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находим дискрименант квадратного уравнения: 3*3+16=25.
теперь корни уравнения: х1,2= (3+-5)/4
х1= -1/2, х2=2.
получаем: 2(х+1/2)(х-2)