radicali ! ajutor ! dau coroana !
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√1728/√12 = √1728/12 = √144 = 12
√147/√3 = √147/3 = √49 = 7
- √486/√6 = - √486/6 = - √81 = - 9
√980/(- √5) = - √980/5 = - √196 = - 14