a)
b)
a)√3·(3√24-4√6+5√54)=√3·(6√6-4√6+15√6)=√3·17√6=17√18=17·√9·√2=51√2
b)√10·(2√20-7√8-4√5-2√18)=√10·(4√5-14√2-4√5-6√2)=√10·(-20√2)=-20√20=-40√5
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a)√3·(3√24-4√6+5√54)=√3·(6√6-4√6+15√6)=√3·17√6=17√18=17·√9·√2=51√2
b)√10·(2√20-7√8-4√5-2√18)=√10·(4√5-14√2-4√5-6√2)=√10·(-20√2)=-20√20=-40√5