Equilateral means that the 3 sides are equal length. For this to happen, the triangle needs to also have 3 equal angles, but it is mentionned that it has an obtus angle, therefore, not all angles are the same, meaning the 3 sides also aren't equivalent.
the triangle isn't equilateral
Answer:
-12
Step-by-step explanation:
C would be your answer and here is how you would solve the problem.
If you were to solve this equation you would get answers of x=-2 and x=-8