zapisz w najprostszej postaci wyrażenia : a) 6√8+7√28-2√18-3√63 b) 5√98-3√45+2√128-6√180 c) -3√11+4√12+2√176-5√48
a)6√8+7√28-2√18-3√63=12√2+14√7-6√2-3√7=6√2+11√7b)5√98-3√45+2√128-6√180=14√2-6√5+8√2-6√2=16√2-6√5c)-3√11+4√12+2√176-5√48=-3√11+8√3+4√11-4√3=√11+4√3
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a)6√8+7√28-2√18-3√63=12√2+14√7-6√2-3√7=6√2+11√7
b)5√98-3√45+2√128-6√180=14√2-6√5+8√2-6√2=16√2-6√5
c)-3√11+4√12+2√176-5√48=-3√11+8√3+4√11-4√3=√11+4√3