Question

Write the equation in standard form of the circle where center (-2,0) and radius 5​

Answer 1

x²+y²+4x-21=0

Explanation:

(x-h)²+(y-k)²=r²

(x--2)²+(y-0)²=(5)²

(x+2)²+y²=25

x²+4x+4+y²=25

x²+y²+4x-21=0