Question 957432

an explicit function relating the side of a {{{square}}} to its {{{area}}} has side length {{{x+5}}}

the area of a square is {{{A=a^2}}}

if an explicit function relating the side of a {{{square}}} to its {{{area}}} is {{{f(x)}}} then {{{f(x)=a^2}}}

if the side is {{{a=x+5}}}, then {{{f(x)=(x+5)^2}}}=>  {{{f(x)=x^2+10x+25}}}

so, your explicit function relating the side of a {{{square}}} to its {{{area}}} is {{{f(x)=x^2+10x+25}}} and it is quadratic function