Answer:
Step-by-step explanation:
Answer:
sorry PLS the question is not clear I think U missed some parts
Let's simplify step-by-step.
3b+5b2−3b−4b2
=3b+5b2+−3b+−4b2
Combine Like Terms:
=3b+5b2+−3b+−4b2
=(5b2+−4b2)+(3b+−3b)
=b2
The answer is
C.
Adding any positive value to

won't really make

into a rational number, so the way you have to do it add the negative self, -

to make it into 0. Any number plus its negative value would result in 0, which is a rational number.