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2 + 1/2 √11 = (a + b) + 2√ab
2 + 1/2 √11 = (a + b) + 1/2 √16ab
a + b = 2
16ab = 11
16(2 - b)b = 11
16b² - 32b + 11 = 0
faktorkan nnt dpt b nya dan a nya masukan ke √a + √b