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Factorize the following expressions:  12m^2 – 27

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Factorize the following expressions:

 12m2 – 27

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We have,

12m2 – 27

= 3 (4m2 – 9)

= 3 [(2m)2 – 32]  (By using the formula (a2 – b2) = (a-b) (a+b))

= 3 (2m + 3) (2m – 3)

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