Question

The equation of the circle with centre (-1 0) and radius sqrt(7) is-

Answer 1

Answer:

(c) ${x}^{2} + {y}^{2} + 2x - 6 = 0.$

Step-by-step explanation:

${( x + 1)}^{2} + {(y - 0)}^{2} = { \sqrt{7} }^{2} \\ \\ {x}^{2} + {y}^{2} + 2x + 1 = 7 \\ \\ {x}^{2} + {y}^{2} + 2x - 6 = 0.$