Giúp mình với làm cả bài nhé

Đáp án `+` Giải thích các bước giải:

`1,`

`x^3 = 7^3`

`x = 7`

Vậy `x=7`

`2,`

`x^3 = 125`

`x^3 = 5^3`

`x = 5`

Vậy `x = 5`

`3,`

`x^5 = 17^5`

`x = 17`

Vậy `x = 17`

`4,`

`x^7 = 7^7`

`x = 7`

Vậy `x = 7`

`5,`

`x^3 = 27`

`x^3 = 3^3`

`x = 3`

Vậy `x = 3`

`6,`

`x^3 = 64`

`x^3 = 4^3`

`x = 4`

Vậy `x = 4`

`7,`

`x^2 = 81`

`x^2 = 9^2`

`x = 9`

Vậy `x = 9`

`8,`

`(x+1)^3 = 125`

`(x+1)^3 = 5^3`

`x + 1 = 5`

`x = 5 - 1`

`x = 4`

Vậy `x = 4`

`9,`

`(x - 2)^3 = 2^3`

`x - 2 = 2`

`x = 2+2`

`x = 4`

Vậy `x = 4`

`10,`

`(x + 1)^3 = 27`

`(x+1)^3 = 3^3`

`x + 1 = 3`

`x = 3 - 1`

`x = 2`

Vậy `x = 2`

`11,`

`(x-2)^3 = 8`

`(x-2)^3 = 2^3`

`x - 2 = 2`

`x = 2+2`

`x = 4`

Vậy `x = 4`

`12,`

`x^4 = 16`

`x^4 = 2^4`

`x = 2`

Vậy `x = 2`

`13,`

`25x^2 = 25`

`x^2 = 25 : 25`

`x^2 = 1`

`x^1 = 1^2`

`x = 1`

Vậy `x=1`

`14,`

`(x+2)^2 = 36`

`(x+2)^2 = 6^2 = (-6)^2`

TH1: `x + 2 = 6`

`x = 6 - 2`

`x = 4`

TH2: `x + 2 = -6`

`x = -6 - 2`

`x= -8`

Vậy `x \in {4;-8}`

`15,`

`(x - 1)^4 = 16`

`(x - 1)^4 = 2^4 = (-2)^4`

TH1: `x - 1 = 2`

`x = 2 + 1`

`x = 3`

TH2: `x - 1 = -2`

`x= -2 + 1`

`x = -1`

Vậy `x \in {3;-1}`

`16,`

`x^2 = 100`

`x^2 = 10^2 = (-10)^2`

`x = 10` hoặc `x = -10`

Vậy `x \in {10;-10}`

`17,`

`(x - 3)^6 = 64`

`(x - 3)^6 = 2^6 = (-2)^6`

TH1: `x - 3 = 2`

`x = 2 + 3`

`x = 5`

TH2: `x - 3 = -2`

`x = -2 + 3`

`x = 1`

Vậy `x \in {5;1}`

`18,`

`(x - 3)^4 = 16`

`(x - 3)^4 = 2^4 = (-2)^4`

TH1: `x - 3 = 2`

`x = 2+3`

`x = 5`

TH2: `x - 3 = -2`

`x = -2 + 3`

`x = 1`

Vậy `x \in {5;1}`

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