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HELP PLZ '-' Khan Acdamey

HELP PLZ '-' Khan Acdamey-example-1

1 Answer

3 votes

That picture is trying to tell us the area is

A = x² - 12x + 36

A = (x - 6)²

Since for a square

A = s²

s² = (x - 6)²

s = |x - 6|

Answer: |x-6|