Question 856076
Calculate {{{AG=(f(-3)-f(-5))/((-3)-(-5))}}}
{{{f(-3)=(-3)(-3+3)=0}}}
{{{f(-5)=(-5)(-5+3)=-5(-2)=10}}}
{{{AG=(0-10)/(-3+5)=(-10)/(2)=-5}}}

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{{{drawing(300,300,-6,2,-4,16,grid(1),
circle(-5,10,0.2),
circle(-3,0,0.2),
green(line(-5,10,-3,0)),
graph(300,300,-6,2,-4,16,x^2+3x)))}}}