3,4,

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3,4,
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3,4,
3,4,
 

3,4,
-x(3x-2)-1/3.a(a+2b)(a-2b)

3,4, 3,4, 3,4, 3 4 3,4, 3 4 3,4, 3,4, 3,4 3,4, 3,4, 3,4, 3,4, 3,4, 3/4 3,4, 3,4, 3,4,