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a² - b² = 85
__________ +
2a² = 242
a² = 121
a = 11
b = √(157 - 121)
= √36
= 6
bilangan tersebut 11 dan 6
a² - b² = 85 +
2a² = 242
a²=242:2=121
a=11
b=√(157-121)
= √36 =6
bilangannya adalah= 11 dan 6