Question

Find the length of the side of a given square , if the area of the square of 625 square units . Also , find the value of x.

Answer 1

$(4x+5{)}^2=625$

$\Rightarrow (4x+5{)}^2=(25{)}^2$

So $4x+5=25$

$4x=20$

$x=5$

So length of side $=25$

& $x=5$.