Question

A) 15^38:5^38-(3^19)^2

B) 30^ n+3:10^n+3-3^n×3^3


Va rog urgent
DAU COROANA

Answer 1

Răspuns:

Explicație pas cu pas:

$\bf a) ~15^{38}:5^{38}-(3^{19})^{2} = 3^{38}\cdot 5^{38}-3^{19\cdot2} =$

$\bf \bf 3^{38}\cdot 5^{38-38}-3^{38} = 3^{38}\cdot 5^{0}-3^{38} =$

$\bf 3^{38}\cdot 1-3^{38} =3^{38}-3^{38} = \red{\underline{~0~}}$

Punctul b in imagine