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= Limx→a (x² - 4x + 4 + 5) = 14
= Limx→a (x² - 4x + 9) = 14
= Limx→a (x² - 4x + 9 - 14) = 0
= Limx→a x² - 4x - 5
= a^2 - 4a - 5
hahaha :p jadiin yang terbaik :p