1. √28=√(4*7)=2√7;
0,2√125=0,2*√(25*5)=0,2*5√5=√5;
0,01√800=0,01√(100*4*2)=0,01*10*2√2=0,2√2
2. 4√5=√(16*5)=√80
-3√2=√(9*2)=√18
0,01√800=√(0,0001*800)=√0,08
3. √27=3√3; 3√3<4√3
1/3 √54 = 1/3 * 3√6=√6; √6<3
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Answers & Comments
1. √28=√(4*7)=2√7;
0,2√125=0,2*√(25*5)=0,2*5√5=√5;
0,01√800=0,01√(100*4*2)=0,01*10*2√2=0,2√2
2. 4√5=√(16*5)=√80
-3√2=√(9*2)=√18
0,01√800=√(0,0001*800)=√0,08
3. √27=3√3; 3√3<4√3
1/3 √54 = 1/3 * 3√6=√6; √6<3