Question

factor the expression
3
2x + 54 = 0 (the x is cubed)

Answer 1

Factor 2x^3 +54 =0.

x^3 = -54/2
x^3 = -27
cbrt(x^3) = cbrt(-27)
x*x*x = (-3)*(-3)*(-3)
x= -3

Double check:

2(-27) +54 = 0
-54 + 54 = 0
0=0 (its all good)

Answer 2

ok yeah that makes sense thank you !!

Answer 3

so then 2x 3 - 250 = 0 is same

x 3 = 250/2 which is 125
x 3 = 125 so x = 5

Answer 4

Yes, exactly :)

Answer 5

ok thank you so much then