Question 1151234
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Foci (±5, 0) --> center at (0,0); major axis is horizontal; c=5
Major axis length 12 --> semimajor axis = 6 = a<br>
{{{x^2/a^2+y^2/b^2 = 1}}}<br>
where<br>
{{{c^2 = a^2-b^2}}}<br>
So<br>
{{{5^2 = 6^2-b^2}}}
{{{25 = 36-b^2}}}
{{{b^2 = 11}}}<br>
Equation: {{{x^2/36+y^2/11 = 1}}}<br>