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Calculeaza :
8:2,5=
radical8:radical2=
4radical3:2=
4radical3:2,5=
(-21):1,2=
2radical8:(-radical2)=
(-5radical14):(-10radical7)=
Va rog sa ma ajutati


Răspuns :

8:2,5=8: 25/10=8:5/2=8×2/5=16/5=3,2

√8:√2=
2√2:√2=2
4√3:2=2
√3

4√3:2,5=
4√3:5/2=4√3 ×2/5=8√3/5=1,6√3

(-21):1,2=
(-21):12/10=-21 ×5/6=-7 ×5/2=-35/2=-17,5

2√8:(-√2)=
4√2:(-√2)=-4

(-5√14):(-10√7)=
5√14 :10√7=5√14 ×1/10√7=√2/2