Calculați oral utilizând regulile de calcul al puterilor:a)5³×4³= b)(2⁶)²:2⁹=
c)(15³×15⁷)÷15⁹=
d)(3²)⁵÷(3⁴×3³)
e)(10²)³÷10⁴=
f)(4¹²×3¹²)÷(4×3)⁹=
g)(7²)⁵÷7⁸×10=
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