๋‘˜์ค‘ ๋ญ์‚ฌ์ง€?

x2 6๋งŒ์›๋Œ€ x2v2 12๋งŒ์›ย 


๋งˆ์šฐ์Šค ์ฐจ์ด๋งŽ์ด๋‚จ?