Question

[2X+1]³=125

Answer 1

\(\Rightarrow\left[2x+1\right]^3=5^3\)

\(\Rightarrow2x+1=5\)

\(\Rightarrow2x=4\)

\(\Rightarrow x=2\)

Answer 2

\(\Leftrightarrow\left(2x+1\right)^3=\left(5^3\right)\)

\(\Leftrightarrow2x+1=5\)
\(\Leftrightarrow2x=5-1\)

\(\Leftrightarrow2x=4\)

\(\Leftrightarrow x=4:2\)

\(\Leftrightarrow x=2\)

Answer 3

\(\left(2x+1\right)^3\)\(=5^3\)

\(=>2x+1=5\)

\(=>2x=6\)

\(=>x=3\)

\(Nhớ\)\(Tích\)

Answer 4

\(\left(2x+1\right)^3=125\)

\(\Rightarrow\left(2x+1\right)^3=5^3\)

\(\Rightarrow2x+1=5\)

\(2x=5-1\)

\(2x=4\)

\(x=4:2\)

\(x=2\)

Answer 5

[2X+1]³=5³

:=))2x+1=5

2X=5-1

2X=4

X=4:2

X=2