Question

6- Simplifique as expressões

a) (m-1)² - (m+1) (m-1)
b) (x+4) (x-4) - (x-4)²​

Answer 1

b)

$b) \\ (x - 4) ( x + 4) - (x - 4) {}^{2} \\ (x - 4) \times (x + 4 - x + 4) \\ (x - 4)x8 \\ 8(x - 4)$