Question

Am nevoie de ajutor , va rog ! ​

Answer 1

Răspuns:

Explicație pas cu pas:

√4*0,(4)=√4*4/9=√16/√9=4/3

√40*0,0(4) =√40*4/90=√40*4/90=√160*90=√16/√9=4/3

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√400*4/900=√1600/√900=√16/9=4/3

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x= 25*( 4/3+4/3+4/3)

x= 25*12/3

x= 25*4

x= 100

x= 10² .....x= patrat perfect