The left side can be written as a square. We can take the square root, then subtract 1.
... (x +1)² = 17
... x +1 = ±√17
... x = -1 ±√17
Answer:

Step-by-step explanation:
Answer:
The answer is AS A Congruence Postulate.
Step-by-step explanation:
You did not Include the statements.