Question

Make a rectangular grid using different colours for quadratic equation x 2 + 9x +20 = 0 ? First i solved the equation and the value of x was -4 and -5 but it is asked to make a rectangular grid how do i make a rectangular grid for this equation ???

Answer 1

You have to neglect the negative signs that is consider 4 instead of (-4) as one side and 5 instead of (-5) as the other side of the grid and make the grid.