19
Zadanie
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a) 592−112472−232​=(59−11)⋅(59+11)(47−23)⋅(47+23)​=48⋅7024⋅70​=4824​=21​
b) 672−332682−342​=(67−33)⋅(67+33)(68−34)⋅(68+34)​=34⋅10034⋅102​=100102​=5051​=1501​
c) 1142−862782−222​=(114−86)⋅(114+86)(78−22)⋅(78+22)​=281⋅200562⋅100​=2002⋅100​=200200​=1
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