factorise 4y²– 12y +9
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Answer:
(2y-3)²
Step-by-step explanation:
4y² - 12y + 9 = 0
∴ 4y² - 6y - 6y + 9 = 0
∴ 2y (2y - 3) - 3(2y- 3) = 0
∴ (2y - 3)(2y-3) = 0
∴ (2y-3)²
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