решите пожалуйста.
1) 3x²-4x-4=0 ,2 =3 ;в=4:c=4
D = ?
x1 ,x2 = ?
2)7x²-28=0
3)2x²-3x=0
4)2x²-7x+3 = 0 ,a=2:в=-7:с=3
В= ?
x1,x2 =?
1) 3x²-4x-4=0 ,2 =3 ;в=4:c=4
D = ?
x1 ,x2 = ?
2)7x²-28=0
3)2x²-3x=0
4)2x²-7x+3 = 0 ,a=2:в=-7:с=3
В= ?
x1,x2 =?
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