Question

2. A forma fatorada de m2 + 2mn + n2 – 4 é:
a) (m + n – 2)(m + n + 2)
b) (m – n – 2)(m + n + 2)

Answer 1

m²+2mn+n² - 4

(m+n)² - (2)²

(m+n -2)(m+n +2) ====> a)