Question

( X-5 mũ 3 )+4=129

 

Answer 1

\((x-5)^3+4=129\\\Rightarrow (x-5)^3=129-4\\\Rightarrow (x-5)^3=125\\\Rightarrow (x-5)^3=5^3\\\Rightarrow x-5=5\\\Rightarrow x=5+5\\\Rightarrow x=10\\Vậy:x=10\)

Answer 2

(x-5³)+4=129

⇒x-5³=129-4

⇒x-5³=125

⇒x-125=125

⇒x=250

Answer 3

129 -5[29-(6-1) ^2] 

=129 - 5[29- 5^2]

= 129 -5[ 29-25]

=129 - 5 × 4

=129 - 20

=109