Question

b [(-7)²-(-1-6)4 (-5-2)³]5: (-7)4³.

Answer 1

Răspuns: $\bf \red{ \underline{49}}$

Explicație pas cu pas:

$\bf \big[ ( - 7)^{2} \cdot( - 1 - 6)^{4} \cdot( - 5 - 2)^{3} \big]^{5} :( - 7)^{43} =$

$\bf \big[ ( - 7)^{2} \cdot( - 7)^{4} \cdot( -7)^{3} \big]^{5} : ( - 7)^{43} =$

$\bf \big[ ( - 7)^{2 + 4 + 3}\big]^{5}: ( - 7)^{43} =$

$\bf \big[ ( - 7)^{9}\big]^{5}: ( - 7)^{43} =$

$\bf ( - 7)^{9 \cdot5}: ( - 7)^{43} =$

$\bf ( - 7)^{ 45}: ( - 7)^{43} =$

$\bf ( - 7)^{ 45 - 43} = ( - 7)^{2} = {7}^{2} = \red{ \underline{49}}$

==pav38==

Baftă multă !