formula : area of square = Length²
- all the sides in a square is of same measure
Length = √area of square
- given here the area: 25y² – 20y + 4
[tex]\rightarrow \sf Length =\sqrt{ 25y^2 - 20y + 4}[/tex]
[tex]\rightarrow \sf Length =\sqrt{ 25y^2 - 10y -10y+ 4}[/tex]
[tex]\rightarrow \sf Length =\sqrt{ 5y(5y - 2) -2(5y-2)}[/tex]
[tex]\rightarrow \sf Length =\sqrt{ (5y-2)(5y-2)}[/tex]
[tex]\rightarrow \sf Length =\sqrt{ (5y-2)^2}[/tex]
[tex]\rightarrow \sf Length =5y-2[/tex]
