Pemfaktoran dari x^2 + 4 + 4 dan x^2 - 2x + 1 adalah

x^2+4x+4
=>(x+2)(x+2)
=>x+2=0
x=-2
=>x+2=0
x=-2

x^2-2x+1
(x-1)(x-1)
=>x-1=0
x=1
=>x-1=0
x=1

x² + 4x + 4
→ x² + 2x + 2x + 4
→ (x² + 2x) + (2x + 4)
→ x (x + 2) + 2 (x + 2)
→ (x + 2) (x + 2)
→ (x + 2)²

x² - 2x + 1
→ x² - x - x + 1
→ (x² - x) - (x - 1)
→ x (x - 1) - 1 (x - 1)
→ (x - 1) (x - 1)
→ (x - 1)²