FORMULA 2° GRADO
4	x	-	15	=	25
4	x	=	25	+	15
4	x	=	40
	x	=	40	/	4
	x	=	10
				FORMULA 3° GRADO
x	=	-	b	±	w	b2	-	4	(a)	( c )	/2a
6	x	-1	10	+	33	=	0
x	=	-1	-10	±	w	(-10)2	-	4	*	6	*	33	/	2	*	6
x	=	-1	-10	±	w	-20	-	792	/	12
x	=	10	±	w	-812	/	12
x	=	10	±	-	28.5	/	12					-28.5
x1	=	-1.54
x2	=	3.21