Question

Factorise
$9 + 6z + z2$
​

Answer 1

Answer:

Here is ur answer

Step-by-step explanation:

Z^2+6z+9=(z+3)^2 is the answer

Answer 2

Answer:

Z = - 3

Step-by-step explanation:

Z^2 + 6z + 9 = 0

Z^2 + 3z + 3z + 9 = 0

z(z + 3) + 3(z + 3) = 0

(z + 3)(z + 3) = 0

z = - 3 and z = - 3