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-Efectuati:
A) √35×√63-(2√45-√80+√845).
B) 62+(3√75+√432)×(√588-√6×√128).
-Vreau rezolvarea completa !


Răspuns :


A) √35×√63-(2√45-√80+√845)=
=√7*5×√9*7-(6√5-4√5+13√5)=
=7*3√5-15√5=
=
21√5-15√5=
=6√5

 B) 62+(3√75+√432)×(√588-√6×√128)=
=
62+(15√3+12√3)×(14√3-16√3)=
=62+(27√3)×(-2√3)=
=62-162=-100