Question 1082845
{{{y=a(x+5)^2-10}}}


{{{y+10=a(x+5)^2}}}

{{{(y+10)/(x+5)^2=a}}}

{{{a=(y+10)/(x+5)^2}}}

{{{a=(15+10)/(0+5)^2}}}

{{{a=25/25}}}

{{{a=1}}}

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{{{highlight(y=(x+5)^2-10)}}}