Classify this triangle.

Acute scalene triangle
Obtuse isosceles triangle
Right isosceles triangle
Right scalene triangle

right isosceles

Step-by-step explanation:

the angle at the bottom is right therefore you need to figure out the lengths of the sides to conclude if it is isosceles or scalene. because two of the sides are the same length and the other is not it is isosceles

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8