Question

Locate the foci of the ellipse. Show your work.

x^2/36+y^2/11=1

c^2=a^2-b^2
c^2=36-11
c^2=25
c= ± sqrt25
c= ±sqrt5*5

is this correct?

Answer 1

correct.

Answer 2

you got c correct, but did not express the coordinates of the foci.

c = ±5

where is the center of the ellipse?

Is the major axis horizontal or vertical?