Completing the Square
Step through the geometric construction.
STEP 1 OF 5
Start: x² + 6x
x²
(x by x)
6x
(x by 6)
3x
3x
3x
9
(x + 3)
(x + 3)
Completing the square turns x² + 6x into (x + 3)² − 9.
It rearranges the same area into a perfect square.
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