Part a) Write the equation of the circle by completing the square.

1 answer:

7 0

Hello :
<span>x² + 4x + y²- 2y = 20

</span>x² + 4x+4-4 + y²- 2y+1-1 = 20
(x² + 4x+4)-4 + (y²- 2y+1)-1 = 20
(x+2)² + (y-1)² = 5²
<span>the radius is : 5 the center: (-2,1)</span>

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