1.

If the normals at (x_(1),y_(1))and (x_(2) ,y_(2)) on y^(2) = 4ax meet again on parabola then x_(1)x_(2)+y_(1)y_(2)=

Answer»

`4A^(2)`
`8a^(2)`
`12a^(2)`
`10a^(2)`

ANSWER :C


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