Răspuns:
Explicație pas cu pas:
a)
3² x 3¹⁰ x (3⁵)³ : 3¹² = 3¹⁵
= 3⁽²⁺¹⁰⁾ x 3⁵ˣ³ : 3¹² =
= 3¹² x 3¹⁵ : 3¹²=
= 3⁽¹²⁺¹⁵⁻¹²⁾ =
= 3¹⁵
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b)
[ ( - 5)⁸ x ( - 5)¹⁵ x ( - 5)¹⁰]⁴ : [( - 5)¹⁵ x ( - 5)⁵]³ = 5⁷²
= [ 5⁸ x ( - 5)¹⁵ x 5¹⁰]⁴ : [ ( - 5)¹⁵⁺⁵]³ =
= ( - 5⁽⁸⁺¹⁵⁺¹⁰⁾ )⁴ : ( 5²⁰ )³ =
= ( - 5³³)⁴ : ( 5²⁰ˣ³) =
= 5³³ˣ⁴ : 5⁶⁰ =
= 5⁽¹³²⁻⁶⁰⁾ =
= 5⁷²
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( - )² = +; ( - ) la putere para => plus
( - )³= - ; ( - ) la putere impara => minus
