How to solve this mathematical problem?

Question

Mathematics

How to solve the photo problem? Correct answer:

ba more than 2

. How to find out, that is, you need to find out why ba is greater than 2. How to solve such problems?

Answer 1

judging by the segment, you have
b greater than 2
a less than zero.
and if negative a is subtracted from b, then minus times minus gives plus.
This is kind of like banal logic

Answer 2

looks like , а < 0so
subtracting from bnegative аwill only increase the value.
By condition band so more than 2.