How to convert this to standard form with steps?

Question

x² +8x+y²-12y=-29

Answer 1

Complete the square for the x-terms and for the y-terms:

(x² + 8x) + (y² - 12y) = -29

(x² + 8x + 16) + (y² - 12y + 36) = -29 + 16 + 36

(x+4)² + (y-6)² = 23

This is a circle with center (-4,6) and radius √23