N°80.
1) √81*16=9*4=36
2) √0,09*25=√2,25=√9/4=3/2
3) √576*0,16=48/5
4) √0,25*0,09*144=9/5
5) √16/121=√16/√121=√4^2/√11^2=4/11
6) √6 19/25=√169/25=13/5
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N°82.
1) √72*√2=√144=12
2) √45*√5=√225=15
3) √360*√490=√176400=420
4) √0,9*√1,6=√1,44=√36/25=6/5
5) √242/√2=√121√2=11√√2=11^4√2
6) √40/√0,025=√40/√1/40=40
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Answers & Comments
N°80.
1) √81*16=9*4=36
2) √0,09*25=√2,25=√9/4=3/2
3) √576*0,16=48/5
4) √0,25*0,09*144=9/5
5) √16/121=√16/√121=√4^2/√11^2=4/11
6) √6 19/25=√169/25=13/5
_______________________________
N°82.
1) √72*√2=√144=12
2) √45*√5=√225=15
3) √360*√490=√176400=420
4) √0,9*√1,6=√1,44=√36/25=6/5
5) √242/√2=√121√2=11√√2=11^4√2
6) √40/√0,025=√40/√1/40=40