Answer:
a−1 : positive
a−2 : negative
−b : positive
a+b : negative
a−b : positive
ab+1 :negative
Step-by-step explanation:
a−1 :a is greater than 1, so a−1 is positive
a−2 : b a−2 is negative
−b :−b is positive
a+b : Since b is negative and a is positive, a+b is negative
a−b : also positive. a−b is positive
ab+1 :ab+1 is negative.
