$\"\"$

The standard form of quadratic function $\"\"$ and its vertex is $\"\"$ .

The function is $\"\"$ .

observe the graph of the function :

The x - intercepts are $\"\"$ and $\"\"$ . $\"\"$

Find algebraically : \ \

Find the x - intercepts by substituting $\"\"$ in $\"\"$ .

$\"\"$

The x - intercepts are $\"\"$ and $\"\"$ . $\"\"$

The x - intercepts are $\"\"$ and $\"\"$ .