The parabola y=ax^2+bx+c is graphed below. Find a+b+c. (The grid lines are one unit apart.)
Find a+b+c.
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\(f(x)=(x-1)^2-4= x^2-2x+1-4\\ \color{blue}f(x)=x^2-2x-3\)
a + b + c = 1 + (-2) + (-3) = - 4
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