Answer:
(x - 1)² = 0
Step-by-step explanation:
Given
x² - 2x + 1 = 0 ( subtract 1 from both sides )
x² - 2x = - 1
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(- 1)x + 1 = - 1 + 1
(x - 1)² = 0
24+8 = 30
30 - 12 = 18
18-9 = 8
There are 8 cards left in the stack
which one ?
the bottom or the top or is this a trick
