Select the correct answer. Which expression is equivalent to the given polynomial expression? (-4a2 – 3b) + (-2ab -a2 +b2) + (-b2+ 6ab)

OA.-3a2 +2b2 + 8ab + 3b
OB.-3a2 + 4ab + 3b
O c. -5a2 + 4ab - 3b
D.-5a2 + 2b2 + 8ab + 3b

i belive those are the ones that are under 90 degreese.

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3