Answer:
130
Step-by-step explanation:
Angle B = 180 - Angle A
180 - 50 = 130
The x axis is horzontial
the y axis is vertical
Because -7i and 7i are the solutions to the quadratic equation, you can first write it in factored form (x-7i)(x+7i). The you multiply this out and get x^{2} +49.
It’s C i’m pretty sure 16
