Question

A forma fatorada de a2+ 4a +4 é.
(A)( a + 2)2
(B) (a – 2)2
(C)(a + 3)2
(D)(a – 3)2

Answer 1

Resposta:

a² + 4a + 4

(a + 2)²

(a + 2).(a + 2)

a² + 2a + 2a + 4

a² + 4a + 4

Letra a) (a + 2)²