<PRE><B>Question 744560</B>
{{{y-k=a(x-h)^2}}} Substitute the values for h and k&gt;&lt;P&gt;
{{{y-(c-b^2/4a)=a(x-(-b/2a))^2}}}&lt;P&gt;
{{{y-c+b^2/4a=a(x+b/2a)^2}}} &lt;P&gt;
FOIL {{{(x+b/2a)^2}}}&lt;P&gt;
{{{y-c+b^2/4a=a(x^2 +2bx/2a + b^2/4a^2)}}}&lt;P&gt;
Distribute a&lt;P&gt;
{{{y-c+b^2/4a=ax^2 +2abx/2a + ab^2/4a^2)}}}&lt;P&gt;
Cancel where possible&lt;P&gt;
{{{y-c+b^2/4a=ax^2 +bx + b^2/4a)}}}&lt;P&gt;
Add c to both sides.  Subtract {{{b^2/4a}}} from both sides.&lt;P&gt;
{{{y=ax^2+bx+c}}}
&lt;P&gt;Hope the solution helped.  Sometimes you need more than a solution.  Contact fcabanski@hotmail.com for online, private tutoring, or personalized problem solving (quick for groups of problems.)
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