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CGP EDU Academic Team
Published on: August 13, 2026
The equation of common tangent of x 2 + y 2 = 2 and y 2 = 8x is
Text Solution
Verified by ExpertsThe correct answer is:
A
c = 
= ± b 
= 
2 = m 2 (1 + m 2 ) ⇒ m 4 + m 2 – 2 = 0
m 4 + 2m 2 – m 2 – 2 = 0
(m 2 – 1) = 0
m = ± 1
y = ± x ± 2
y = x + 2
or y = –x – 2
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