if all the chord of the curve 3x2−y2−2x+4y=0 which subtend a right angle at origin passes through fixed point (a,b). Then |a+b| is equal to:

if all the chord of the curve 3x2−y2−2x+4y=0 which subtend a right

1.	if all the chord of the curve 3x2−y2−2x+4y=0 which subtend a right angle at origin passes through fixed point (a,b). Then \|a+b\| is equal to:
Answer» if all the chord of the curve $3 x^{2} - y^{2} - 2 x + 4 y = 0$ which subtend a right angle at origin passes through fixed point $(a, b)$ . Then $\| a + b \|$ is equal to: