Question

Bài 2 : Tìm x : ( 3 - 4x)³ = -125

Answer 1

\(\left(3-4x\right)^3=-125\)

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

\(\Rightarrow3-4x=-5\)

\(\Rightarrow4x=8\)

\(\Rightarrow x=2\)

Vậy x = 2

Answer 2

\(\left(3-4x\right)^3=-125< =>\left(3-4x\right)^3=-5^3< =>3-4x=-5\)

\(< =>-4x=-8< =>x=2\)

Vậy x=2

Answer 3

373737.43 - 434343.37 phần 
  2 mũ 2016 - 2 mũ 2015