<s>[INST] Simplify the algebraic expression Can someone please explain to me how the algebraic expression in the picture is simplified. To be more specific, how (1) becomes (2).


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*$3x^2(6x-4)^4 + x^3(6\times 4\times (6x-4)^3)$

*$3x^2(6x-4)^3(6x-4+x\times 2\times 4)$

*$3x^2(6x-4)^3(14x-4)$


original link: http://i.stack.imgur.com/7rXzS.jpg
 [/INST] $$3x^2(6x-4)^4+x^3(6\times 4\times (6x-4)^3)$$$$=3x^2(6x-4)^3\times(6x-4)+x^2\times x\times 3\times 2\times 4\times (6x-4)^3$$$$=3x^2(6x-4)^3\times(6x-4)+3x^2(6x-4)^3\times x\times 2\times 4$$$$=3x^2(6x-4)^3((6x-4)+x\times 2\times 4)$$
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