OG详解-OG1 数学1 Q16

Choice C is correct. Since each term of the given expression has a common factor of 6x²y², it may be rewritten as 6x²y²（x⁶）+ 6x²y²（2），6x²y²（x⁶+2）.
Choice A is incorrect. This expression is equivalent to 12x⁸y²，not 6x⁸y²+12x²y².
Choice B is incorrect. This expression is equivalent to 6x⁶y²，not 6x⁸y²+12x²y².
Choice D is incorrect. This expression is equivalent to 6x⁶y²+12x²y²，not 6x⁸y²+12x²y²