Respuesta :

altavistard

Answer:

No solution

Step-by-step explanation:

I'd suggest you try to solve this first:  3√(x + 8) = 4.  First, square both sides; this results in 9(x + 8) = 16, or x + 72 = 16/9, or x = -632/9.  We cannot let x = -632/9 in √(x + 8) because -632/9 is not in the domain of the square root function.  No solution.

If we now write 3√(x + 8) = -4   (note the negative sign), similar efforts at solution result in 9(x + 8) = -4, or x + 8 = -4/9, or x = -8 - 4/9.  If we now substitute this result for (x + 8) in 3√(x + 8) = -4 (above), we get 3√(-8 + 8 - 4/9), which has no solution; -4/9 is not in the domain of the square root function.

chiamakaokwu0p319a4

Answer: -72

Step-by-step explanation

sorry if it’s confusing, but i hope i helped.

take the 3 & make it 1/3 on both sides

x + 8 = 1/3 sqrt -4

invert 1/3 making that become 3

x+8 = (-4)^3

because the power of 3 is odd, the result will be negative , x+8 = -4^ 3

next simplify 4^3 = 64

now subtract 8 from both sides

x= -64-8

KCC

keep -64 change subtraction to addition & change positive 8 to negative 8 .

x= -72

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