Предмет: Математика, автор: parvinanasibbekova

1)(2а)³; 2)(3х)⁴; 3)(-4х)⁵; 4)(-8х)².
помогите пожалуйста!!!!!​

Ответы

Автор ответа: daniilzhulanov
2

Привет!

(2a)^{3}  =  {2}^{3}  \times  {a}^{3}  = 8 {a}^{3}  \\ (3x) ^{4}  =  {3}^{4}  \times  {x}^{4}  = 81 {x}^{4}  \\ ( - 4x)^{5}  = ( - 4) ^{5}  \times  {x}^{5}  =-1024 {x}^{5}  \\ (  - 8x) ^{2}  = ( - 8) ^{2}  \times  {x}^{2}  = 64 {x}^{2}

Автор ответа: Pawels
1

Ответ:

1) 8а³ ; 2) 81х⁴ ; 3) -1024х⁵ ; 4) 64х²

Пошаговое объяснение:

1) (2а)³= 2³ × а³ = 8а³

2) (3х)⁴= 3⁴ × х⁴ =(3×3×3×3) × (х×х×х×х) = 81х⁴

3) (-4х)⁵= (-4)×(-4)×(-4)×(-4)×(-4) × (х×х×х×х×х)= -1024х⁵ (минус т.к. степень нечетная, т.к. при перемножении один минус останется, а остальные 4 уберуться)

4) (-8х)²= (-8)×(-8) × (х×х)= 64х² (здесь степень четная, и минус на минус дает плюс)

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