Question 774692: Please let me know why does the parabolic equation has two roots though the parabola touches the x-axis only once. Answer by MathLover1(20849) (Show Source):
You can put this solution on YOUR website! ..... the basic upward opening parabola
since you have , always will be two have the same value
example:
if => =>
if => =>
or
if => =>
if => =>
it happens to be first, and is neither positive nor negative, so the lowest point of this parabola is the vertex which is at (,)
and parabola touches as well, only ones
