The answer is C.
Combine like terms. So, +5b^2 - 4b^2 = = b^2 and the +3b and -3b cancel out.
Let's simplify step-by-step.
3b+5b2−3b−4b2
=3b+5b2+−3b+−4b2
Combine Like Terms:
=(5b2+−4b2)+(3b+−3b)
=b2
5.6m questions
7.3m answers