Write (9x² - 12x + 4) as a factorized perfect square expression and find its vertex figure.

9x² - 12x + 4 = (3x - 2)²

At x = 2 / 3

9(2 / 3)² - 12(2 / 3) + 4 = 0

{3(2 / 3) - 2}² = 0

vertex figure as (2 / 3, 0)

Write (25x² - 20x + 4) as a factorized perfect square expression and find its vertex figure.

25x² - 20x + 4 = (5x - 2)²

At x = 2 / 5

25(2 / 5)² - 20(2 / 5) + 4 = 0

{5(2 / 5) - 2}² = 0

vertex figure as (2 / 5, 0)

Write (25x² - 30x + 9) as a factorized perfect square expression and find its vertex figure.

25x² - 30x + 9 = (5x - 3)²

At x = 3 / 5

25(3 / 5)² - 30(3 / 5) + 9 = 0

{5(3 / 5) - 3}² = 0

vertex figure as (3 / 5, 0)