Question

giá trị y thỏa mãn ( 2y + 1 )^3 = -125 . vậy y =

 

Answer 1

(2y+1)^3=-125

=>2y+1=-5

=>2y=-5-1

=>2y=-6

=>y=-6:2

=>y=-3

Answer 2

( 2y + 1 ) ³ = -125

( 2y + 1 )    = -5

 2y             = -6

 y              = -6 : 2

 y               = -3

Answer 3

(2y+1)^3=-125

=>2y+1=-5

=>2y=-5-1

=>2y=-6

=>y=-6:2

=>y=-3

Answer 4

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

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

\(\Rightarrow2y+1=-5\)

\(\Rightarrow2y=-6\)

\(\Rightarrow y=-3\)

vậy \(y=-3\)