real life quadratic equation

Question

what is an example of a quadratic equation that you could use in real life

 

Answer 1

I have a garden in my back yard.  The area of the garden is 48 square feet.  The length of the garden is 2 more than the width.  Find the dimensions of the garden.

 

Area = length times width(lw)

 

Let W = width and then length = W + 2

 

Area = 48        The equation will be

 

     W(W + 2) = 48             distribute

 

    W² + 2W   = 48             subtract 48 from both sides

 

   W² + 2W - 48 = 0

 

This is a quadratic equation.