Question 478399
y=2x^2+7x+5

Find the roots of the equation by quadratic formula							
							
a=	2	b=	7	c=	5		
							
b^2-4ac=	49	-	-40				
b^2-4ac=	9			
{{{sqrt(	9	)}}}=	3
{{{x=(-b+-sqrt(b^2-4ac))/(2a)}}}							
{{{x1=(-b+sqrt(b^2-4ac))/(2a)}}}							
x1=(	-7	+	3	)/	4		
x1=	-1		    				
x2=(	-7	-3	) /	4			
x2= 	-2.5						
-1 & -2.5 are the x intercepts
y intercept =5

{{{drawing(300,300,-10,10,-10,10,circle(-1,0,0.3),circle(-2.5,0,0.3),circle(0,5,0.3),graph(300,300,-10,10,-10,10,y=2x^2+7x+5))}}}