Question

Tìm x biết :

( x + 5 ) ^3 = -64

Answer 1

\(\left(x+5\right)^3=-64\)

\(\Rightarrow\left(x+5\right)^3=\left(-4\right)^3\)

\(\Rightarrow x+5=-4\)

\(\Rightarrow x=-4-5=-9\)

Answer 2

\(\left(x+5\right)^3=-64\)

\(\left(x+5\right)^3=\left(-4\right)^3\)

\(\Rightarrow x+5=-4\)

\(\Rightarrow x=-9\)

vay \(x=-9\)

Answer 3

\(\left(x+5\right)^3=-64\)

\(\left(x+5\right)^3=-4^3\)

\(\Rightarrow\)\(x+5=-4\)

         \(x\)    \(=-4-5\)

         \(x\)       \(=-9\)

vậy \(x=-9\)

Answer 4

(x+5)³​​= - 64

x+5³= - 4³

x+5 = -4

x= - 4 - 5

x= - 9

Vậy x = -9