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Scrie ca putere:
7 la puterea 19:7 la puterea 11=
3la puterea 23:3la puterea 12=
(2la puterea9)la puterea 11=
(5la puterea3) la puterea7=
2la puterea9×3la puterea9=
7 la puterea11×2la puterea12=
12la puterea9×4la puterea 9=
24la puterea11×8la puterea11=