1.x2+y2+2ax+c=0x^2+y^2+2ax+c=0x2+y2+2ax+c=0 and x2+y2+2by+c=0x^2+y^2+2by+c=0x2+y2+2by+c=0 touch each other ifa.c=a2+b2c=\sqrt{a^2+b^2}c=a2+b2b.1c=1a2+1b2\frac{1}{c}=\frac{1}{a^2}+\frac{1}{b^2}c1=a21+b21c.c=1a2+1b2c=\frac{1}{a^2}+\frac{1}{b^2}c=a21+b21d.c=1a2+b2c=\frac{1}{a^2+b^2}c=a2+b21Login to continueOnly logged in users canattempt or see the solution.
