Answer:
5
Step-by-step explanation:
Answer
Find out the Area of a triangle .
To proof
Formula
Area of Triangle

Now vertices are D(3, 3) , E(3, −1) , and F(−2, −5) .

Solving the above


= -10 units²
(Neglected the negative sign as area cannot be negative.)
= 10 units ²
Area of a triangle is 10 units ²
Hence proved
The discriminant of this equation is 49. The solutions for this equation are x=2 and x=-

I hope that helps.