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Pertama cari dahulu nilai n
n = √a² - (b√c) ²
n = √11² - (4√6)²
n= √121-96
n= √25
n=5
Substitusi n
√a+n/2 + √a-n/2
√11+5/2 + √11-5/2
√8 + √3
2√2 + √3