4x^3 + 15 = 47

4x^3 = 47-15=32

x^3 = 32 : 4 = 8

=> x = 2(vi 2^3 = 8)

4x³ + 15 = 47

4x³ = 47 - 15 = 32

x³ = 32 : 4 = 8

x = 2

\(4x^3+15=47\)

\(4x^3=47-15\)

\(4x^3=32\)

\(x^3=32:4\)

\(x^3=8\)

\(x^3=2^3\)

\(\Rightarrow x=2\)

4x³ + 15 = 47 

4x³ = 47 - 15 

4x³ = 32

x³ = 32 : 4 

x³ = 8 

=> x = 2 

( vì 2³ = 8 )

k tui tui thề sẽ k lại ( gửi tin nhắn nha tui k cho )

4x³+15=47

4x³=47-15

4x³=32

x³=32:4

x³=8

=>x=2

4x³ + 15= 47 

\(\Rightarrow4x^3=47-15\)

\(4x^3=32\)

\(^{x^3}=8\Rightarrow x=2\)

Vì \(^{2^3}=8\)

4x³ + 15 = 47

=> 4x³  = 47 - 15 

=> 4x³   = 32

=>   x³    = 32 : 4 = 8

Mà 8 = 2³

=> x³ = 2³

Vậy x = 2

a) 17 + x = -5 + 2x

=> x - 2x = -5 - 17

=> -x = -22

=> x = 22

b) 15 - 3x = -22 - 4x 

=> -3x + 4x = -22 - 15

=> x = -37

c) 47 - (4x + 5) = -(3x - 2)

=> 47 - 4x - 5 = -3x + 2

=> -4x + 3x = 2 - 47 + 5

=> -x = -40

=> x = 40

d) -58 + (3 - 7x) = 15 - 8x

=> -58 + 3 - 7x = 15 - 8x

=> -7x + 8x =15 + 58 - 3

=> x = 70

\(4x^3+15=47\)

\(4x^3=47-15\)

\(4x^3=32\)

\(x^3=32\div4\)

\(x^3=8\)

\(x^3=2^3\)

\(\Rightarrow x=2\)

4x³ + 15 =47

4 x ³      = 47 - 15

4 x ³      =32

x ³             =32 : 4

x ³        = 8

x ³       = 2 ³

=> x = 2

\(4x^3+15=47\)

\(4x^3=47-15\)

\(4x^3=32\)

\(x^3=32:4\)

\(x^3=8\)

\(x^3=2^3\)

\(=>x=3\)

4x³=32

x³=8

x=2

<=> 4x^3 = 32

<=> x^3 = 8

<=> x^3 = 2^3

<=> x = 3

Vậy x = 3

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