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GreenVirus
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exercitile 3,7,8 dau coronita!

Exercitile 378 Dau Coronita class=

Răspuns :

3)a)315,456,341,478,423
b)523,646,699,501,678
7)a=5+4×5=5+20=25=5²=>p.p.
b=3²×5°+2²+3=9×1+4+3=16=4²=>p.p.
c=10+10×2+10×4+10×4=10+20+30+40=100=10²
=>p.p.
8)1+2+3+...+9+10+3²=1+2+3+4+5+6+7+8+9+10+9=64=8²=>p.p.

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