Answer:
a
Step-by-step explanation:
Radical roots occur as conjugate pairs
Given - 5 + t is a root , then
- 5 - t is also a root → a
x=3
Explanation: 11-5=6
6/2= 3
Plug 3 into the equation and you get 2x3+5=11 which 2x3=6 and 6+5=11