If 3x + 8 = - 4, then

evaluate x3 + 5

-59

Step-by-step explanation:

x3 is meaningless; I assume you meant x^3.

If that's the case, then:

3x + 8 = - 4 is equivalent to 3x = - 12, so that x = - 4.

Then (-4) ^3 + 5 = - 64 + 5 = - 59

-59

Step-by-step explanation:

the question can be solved by some simple mathematical steps.

If 3x + 8 = - 4

then, x3 + 5 = ?

from 3x + 8 = - 4

collect the like terms

3x = - 4 - 8

3x = - 12

divide both sides by 3

3x/3 = - 12/3

x = - 4

if x = - 4 then to find x3 + 5 will imply that we will insert the value of x = - 4 into the x3 + 5

-4 ³ + 5

-64 + 5

= - 59

therefore the value of x3 + 5 is solved to be - 59