Verified answer

Explicação passo-a-passo:

a) (x-1) . ( x-1)=

x² - x - x +1=

x² - 2x +1

b) ( x-5) . (x-5)=

x² -5x -5x +25=

x² - 10x +25

c) (x+4) . ( x+4)=

x² +4x +4x +16=

x² +8x +16

d) ( x - 10) . (x -10)=

x² -10x -10x + 100=

x² - 20x +100