Factorize (x2-4x+4) - 81
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Answer:
(x-11) (x+7)
Step-by-step explanation:
=(x2-4x+4)-(9)^2
=(x-2) ^2-(9)^2
=(x-2-9) (x-2+9) (a^2-b^2) =(a-b) (a+b)
=(x-11) (x+7)
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