Răspuns:
Explicație pas cu pas:
3/7 *√3 = √27/49
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0,(3) = 3/9 = 1/3
0,(3)√21 = 1/3*√21 = √21/9 = √7/3
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0,(1) = 1/9
1/9* √6 = √6/81 = √2/27
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0,(6) = 6/9 = 2/3
-2/3*√15 = -√60/9 = -√20/3
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0,(4) = 4/9
4/9*√63 = √16*63/81 = √16*7/9 = √112/9
