Factorise 4y² - 4y + 1
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Answer:
(2y)square - 2×2y×1 + 1
Step-by-step explanation:
4y square - 4y + 1
= (2y)square - 2 ×2y ×1 + 1
By the property (a - b) square =
a square - 2ab + b square
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