Question 1064208
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<pre>
{{{f(x)}}} = {{{(-2)*(x^2+6x+5)}}} = {{{(-2)*((x^2 + 6x + 9) - 9 + 5)}}}  = {{{(-2)*((x+3)^2-4)}}} = {{{(-2)*(x+3)^2 + 8}}}.

Vertex is  (-3,8).


Find x-intercepts using  {{{-2(x+3)^2+8}}} = {{{0}}}. They are x= -5 and x= -1.


Find y-intercepts by evaluating {{{f(0)}}} = -10.



{{{graph(300,300, -6, 6, -15, 15,
         -2x^2 - 12x - 10
)}}}
</pre>

Calculations by "josgarithmetic" are wrong.


Plot by "josgarithmetic" is wrong.