Solve the following equation graphically

x² – 3x – 10 = 0

Here y = x² – 3x – 10

Taking the values of X between –2 to 5 we will find different values of Y which we can use to find the values of roots to the equation given.

Here the curve touches the X- axis at (–2,0) and (5,0) so the two roots for the equation is (–2,5)