Question

Find the area of the squared shaped traffic sign below that is requrieed to make this square-shaped traffic sign

Answer 1

is a square, so it has four equal sides, so the width is 5x + 2 long and the lenght is also 5x + 2 long, so length*width, namely the area will be,

`\bf A=(5x+2)(5x+2)\implies A=\stackrel{FOIL}{25x^2+20x+4}`