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Question
Factorize each of the following expression:
27x2 − 12y2
Solution
\[27 x^2 - 12 y^2 \]
\[ = 3(9 x^2 - 4 y^2 )\]
\[ = 3[(3x )^2 - (2y )^2 ]\]
\[ = 3(3x - 2y)(3x + 2y)\]
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