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= 1/2×2 = 1 jadi jabannya y2 + 1 4. (p2 - 4p2 ) pangkat 2 = p2×2 = p2 =4p2×2 = 8p2
(a+b)^2 = a^2 +2(a)(b) +b^2
(a-b)^2 = a^2 - 2(a)(b) - b^2