Question 328600
a) When {{{y=0}}},
 {{{x^2/25=1}}}
{{{x^2=25}}}
{{{x=0 +- 5}}}
(-5,0) and (5,0)
.
.
.
b) When {{{x=0}}},
{{{y^2/36=1}}}
{{{y=0 +- 6}}}
(0,-6) and (0,6)
.
.
.
c) {{{c^2=b^2-a^2=36-25=9}}}
{{{c=0 +- 3}}}
(0,-3) and (0,3)