Folosind regulile de calcul, scrieti ca o singura putere:
![Folosind Regulile De Calcul Scrieti Ca O Singura Putere class=](https://ro-static.z-dn.net/files/dd2/1bbd8fc89b46c2fdca91bd6f4645209b.jpg)
Răspuns:
k.(+7)⁴×(-9)⁴=7⁴×9⁴=(7×9)⁴=63l.
l. (-7)²×(-6)²=7²×6²=(7×6)²=42²
m. (+12)⁵×(-3)⁵=12⁵×(-3)⁵=(-12×3)⁵=
=(-36)⁵=(-6²)⁵=-6²˟5=-6¹⁰
n. (-5)³×(-2)³=[(-5)×(-2)]³=10³
O. (-15)³:(+3)³=(-15:3)³=(-5)³=-5³
p. (-42)⁵:(+7)⁵=(-42:7)⁵=(-6)⁵=-6⁵