Question
Find the vertex of each parabola by completing the square.$$y=x^{2}+2 x-28$$
Step 1
In the equation $y=x^{2}+2x-28$, the coefficient of $x^{2}$ is $a=1$, the coefficient of $x$ is $b=2$, and the constant term is $c=-28$. Show more…
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