I found the corresponding images of this question. Please see attachment. I have also identified my answer on the attachment.
Answer:
8.55 × 
Step-by-step explanation:
Its not irrational............
We can use FOIL to solve.
(x + 7)(x + 10)
(x * x) + (x * 7) + (7 * x) + (7 * 10)
x² + 7x + 7x + 70
x² + 14x + 70
Best of Luck!
The answer is the first answer choice