Q1 of 41 Page 31

Factorise.

2l3 + 432m3

We know that


- - - - - (i)


Taking 2 common, we get



Here a = l, b = 6m; putting values in eq.i


⇒


⇒


⇒ }]


}


Applying


}


Note: Must memorize cubes upto 12


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