Math, asked by virendrasingh7711, 3 months ago

If A = { (x,y) : x^2 + y^2 = 25 } and B = { (x,y) : x^2 + 9y^2 =144 }, then A intersection B contains ___. (MU-OET 2015)
a) one point
b) two points
c) three points
d) four points

Answers

Answered by aroy23
1

25-y^2=144-9y^2

or,8y^2=119

or,y^2=119/8

x^2=25-119/8

=200-119/8

=81/8

four point

for one positive x we get two real y

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