Question

factorised

$z ^2 + 6z + 9$
​

Answer 1

HEY MATE!

HERE IS YOUR ANSWER:

z^2+6z+9=0

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

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

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

z+3=0 , z+3=0

z=-3,-3

HOPE IT HELPED ^_^