Question

Simplifique
e) ( m – 1 )2– ( m + 1 ) . ( m – 1 )

f) ( x + 4 ) . ( x – 4 ) – ( x – 4 )2

Answer 1

e) ( m – 1 )² - ( m + 1 ) . ( m – 1 )

m²-2m+1 - (m²-1)

m²-2m+1 -m²+1

2-2m

f) ( x + 4 ) .( x – 4 ) – ( x – 4 )²

x²-16 - (x²-8x+16)

x²-16 -x²+8x-16

8x-32