faktorkanlah a. x²-2.2x+2² b. x²+4x+4 c. p²+2pq+q² d. 81x²-54x+9

a) x² - 2.2x + 2² = 0
= x² - 4x + 4 = 0
= (x - 2)(x - 2) = 0
x = 2

b) x² + 4x +4  = 0 
= (x + 2)(x + 2) = 0
x = -2

c) p² + 2pq + q²
=(p+q)(p+q)
=(p+q)²

d) 81x² - 54x + 9
-) (9x - 3)(9x - 3 )
-) (9x - 3)²
-) 9x = 3
-) x = 3/9
-) x = 1/3