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3 years ago

9

WILL MARK BRAINLIEST!!! HELP!

1 answer:

Sphinxa [80]3 years ago

7 0

Answer:

Option B, z = 2

Step-by-step explanation:

<u>Step 1: Factor</u>

z^2 - 4z + 4 = 0

<em>(z - 2)(z - 2) = 0</em>

<em />

<u>Step 2: Solve for z</u>

z - 2 + 2 = 0 + 2 and z - 2 + 2 = 0 + 2

z = 2 and z = 2

<em>Double root at z = 2</em>

<em />

Answer: Option B, z = 2

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