Answer: the vertex of the parabola is at (2,21)
The roots are down below. I didn’t know how to type them out
Explanation:
Roots:
Move the terms aside.
x + 2x^2 - 8x - 13 = 0
Simplify it:
-7x + 2x^2 - 13 = 0
And just use the quadratic formula
“ x = -b + sqrt(b^2 - 4ac)/2a , x = -b— sqrt(b^2 - 4ac)/2a “
and it should end up looking like the picture down below.
