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introduceti factorul sub radical: a)3√7 b)-5√2 c)a√3 daca a>0

Răspuns :

3√7=√9*7=√63
-5√2=-√25*2=-√50
sau
(-5)*√2=√25*2=√50

a√3=√3a²
a)9*7=V63 b)-25×2=-V50 c)V3