Brainiest to whoever gets this right first! 20 points!

The roots of the quadratic equation $z^2 + az + b = 0$ are $-7 + 2i$ and $-7 - 2i$. What is $a+b$?

You know the roots to the quadratic, so you know how the quadratic can be factorized:

Expanding the right side gives

Matching up the coefficients tells us and , so .

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3