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15²-5•[(5⁷)⁸:5³⁰+5•5²¹-5²⁶]:25¹⁰
Vă rogg!​


Răspuns :

225-5•[5⁵⁶:5³⁰+5•5²¹-5²⁶]:25¹⁰

225-5•[5²⁶+5²²-5²⁶]:(5²)¹⁰

225-5•5²²:5²⁰

225-5•5²

225-5³

225-125

=100