Question

radius of the circle X square + Y square - 2 X + 2 Y - 11=0 is equals to zero is​

Answer 1

Step-by-step explanation:

∴ 2x² + 2y² - x = 0 .

==> 2 ( x² + y² - x/2 ) = 0 .

==> 2/2 ( x² + y² - x/2 ) = 0/2 .

==> x² - x/2 + y² = 0 .

==> ( x² - x/2 + (1/4)² ) + y² = (1/4)² .

==> ( x - 1/4 )² + ( y - 0 )² = (1/4)² .

Hence, centre ( -1/4 , 0 ) and radius = 1/4 .