\(a=2^3.3^2+2^3\)

\(a=2^3.\left(3^2+1\right)\)

\(a=8.\left(9+1\right)\)

\(a=8.10=80\)

\(\Rightarrow\left|a\right|=80\)

\(\Rightarrow\orbr{\begin{cases}a=80\\a=-80\end{cases}}\)

2) 

Cảm ơn nhé bạn Mafia

a) (x+3).2¹³.(x+3)=2¹⁷

(x+3)²=2¹⁷:2¹³

(x+3)²=2⁴

(x+3)²=(2²)²

x+3=2²

x+3=4

x=1

b) (4³+64).(3x+4x+5x)=3072

128.12x=3072

12x=3072:128

12x=24

x=2

c) (x-2)³=(x-2)²

=> x-2 = 0

     x=2

hoặc x-2=1

        x=3

a​)1.37x+120=32x+235

​37x+120=32x+235

​37x-32x=235-120

​5x=115

​x=115:5=23

​

                                   Giải:

    a) \(70-5\left(x-3\right)=45\)

        \(5\left(x-3\right)=70-45\)

         \(5\left(x-3\right)=25\)

          \(x-3=25:5\)

          \(x-3=5\)

          \(x=5+3\)

          \(x=8\)

70 - 5 ( x - 3 ) = 45

5 ( x - 3 ) = 70 - 45

5 ( x - 3 ) = 25

x - 3 = 25 : 5

x - 3 = 5

=> x = 8

10 + 2 . x = 4⁵ : 4³

10 + 2 . x = 4²

10 + 2 . x = 16

2 . x = 16 + 10

2 . x = 26

=> x = 13

231 - ( x - 6 ) = 1339 : 13

231 - ( x - 6 ) = 103

x - 6 = 231 - 103

x - 6 = 128

=> x = 134

2 . x - 138 = 2³ . 3²

2 . x - 138 = 72

2 . x = 72 + 138

2 . x = 210

=> x = 105

❤ѕѕѕσиɢσкυѕѕѕ❤

Bớt xàm đi ông

3^x-5 = 1

x  - 5 = 0 => x=  5

2^x + 2^x+1 = 96

2^x.(1+2) = 96

2^x = 96 : 3= 32

2^x = 2⁵

Vậy x = 5

(3x - 2)³ = 2.32 =64

(3x - 2)³ = 4³

3x - 2 = 4 => 3x = 6

x = 6 :  = 2

149 - (35:x + 3).17 = 13

(35:x + 3).17 = 149 - 13 = 136

35:x + 3 = 136 : 17 = 8

35:x = 8 - 3  = 5

x = 35 : 5 = 7 

C = ( 2³ . 21 - 2³ . 17 ) + 125³ : (5²)³ . 2018⁰

C = ( 8 . 21 - 8 . 17 ) + 1953125 :25³ . 1

C = ( 168 - 136 ) + 1953125 : 15625 . 1

C = 32 + 125 . 1

C = 32 + 125

C = 157

Chúc bạn học tốt !

C = ( 2³ . 21 - 2³ . 17 ) + 125³ : (5²)³ . 2018⁰

C = [2³ . (21 - 17)] + 125³ : 5⁶ . 1

C = [8 . 4] + 125³ : 125² . 1

C = 32 + 125 . 1

C = 32 + 125

C = 157.