Question

PlzWegnerkolmp2741ohelpmethakyou

Answer 1

Answer:

z=2

Step-by-step explanation:

z^2 - 4z+4 =0

Factor recognizing

a^2 - 2ab - b^2 = (a-b)^2

(z-2)^2 =0

Using  the zero product property

z-2 = 0

z=2

Answer 2

Answer:

z = 2

Step-by-step explanation:

(z^2) - (4z+4) =0

Which is the same as (a^2 - 2ab - b^2)

=  (a-b)^2

Therefore,  (z - 2)^2 = 0

Taking the square root on both sides,

z - 2 = 0 (because the square root of 0 is 0)

z = 2

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