Question

www.ixl.com/math/algebra-1/add-and-subtract-polynomials
my ixl learning
★ w.4 add and subtract polynomials 5ek
add.
$(5b^{3}-2b^{2}-5b + 4)+(-6b^{3}-5b^{2}-6b - 5)$
submit

Explanation:

Step1: Group like terms

$(5b^3 - 6b^3) + (-2b^2 - 5b^2) + (-5b - 6b) + (4 - 5)$

Step2: Combine like terms

$(-1b^3) + (-7b^2) + (-11b) + (-1)$

Step3: Simplify signs

$-b^3 - 7b^2 - 11b - 1$

Answer:

$-b^3 - 7b^2 - 11b - 1$