Question

I need help with number 6 please

Answer 1

z^2+14z+49

Explanation:

=(z+7)(z+7)

=(z)(z)+(z)(7)+(7)(z)+(7)(7)

=z^2+7z+7z+49

=z^2+14z+49

Answer 2

6 = z^2 + 49

Explanation: