Question

factoring a^2b^2-4ab+4
step by step​

Answer 1

Answer:

(ab - 2)²

Step-by-step explanation:

a²b² - 4 ab + 4

= a²b² - 2 ab - 2ab + 4

= ab(ab - 2) - 2(ab - 2)

= (ab - 2) (ab - 2)

= (ab - 2)²

Answer 2

Answer:

(ab-2)^2

Step-by-step explanation:

$a {}^{2} b {}^{2} - 4ab + 4 \\ a {}^{2} + b {}^{2} - 2ab - 2ab + 4 \\ ab(ab - 2) - 2(ab - 2) \\ (ab - 2)(ab - 2) \\ (ab - 2) {}^{2}$

Hope it will help you army ^_^