Consider the circles `C_1: x^2+y^2=16 and C_2 : x^2 +y^2-12x + 32 = 0`. Which of the following is/are correct?

Consider the two curves C_1 ; y^2 = 4x , C_2 : x^2 + y^2 - 6x + 1 = 0 then :

Consider the circles S_(1):x^(2)+y^(2)=4 and S_(2):x^(2)+y^(2)-2x-4y+4=0 which of the following statements are correct?

Circles x^(2) + y^(2) + 2x = 0 & x^(2) + y^(2) – 2x = 0 Now which of following is/are correct ?

Consider the circles C_(1):x^(2)+y^(2)-4x+6y+8=0;C_(2):x^(2)+y^(2)-10x-6y+14=0 Which of the following statement(s) hold good in respect of C_(1) and C_(2)?

The circles x^2 + y^2 + 6x + 6y = 0 and x^2 + y^2 - 12x - 12y = 0

Consider the two curves C_1:y^2=4x,C^2:x^2-y^2-6x+1=0. Then.

The circles x^(2)+y^(2)+6x+6y=0 and x^(2)+y^(2)-12x-12y=0