I think they wrote the wrong answers but if y’all find out which one it is thanks

Answer:
8x^2+16x+16
Step-by-step explanation:
The combined area is the sum of both expressions.
2x^2-13x+21+6x^2+29x-5
8x^2+16x+16
8(x^2+2x+2)
You're right. The multiple choice is just wrong.