Answer:The solutions of the equation are

and
Step-by-step explanation:The general form of the quadratic equation is:
ax² + bx + c = 0
The given equation is:
7x² - 16x - 28 = 0
By comparing:
a = 7
b = -16
c = -28
Now, to get the roots, we will use the quadratic formula shown in the attached image.
Substitute with the values of a, b and c and calculate the corresponding roots.
You will get the roots:

and

Hope this helps :)