Factorise 4y²-12y+9
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Answer:
4y² -12y +9
4y² -6y -6y + 9
2y(2y-3) -3(2y-3)
(2y-3)(2y-3)
(2y-3)²
Answered by
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Answer:
(2y - 3)^2
Step-by-step explanation:
(a - b) = a^2 - 2(a)(b) + b^2
2y^2 - 2(2y)(3) + 3^2
= (2y - 3)^2
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