Simplify (2x^2−3x+9)+(6x^2+x−1)

8x^2-2x+8

Step-by-step explanation:

2x^2−3x+9)+(6x^2+x−1)

Combine like terms

2x^2 +6x^2 -3x+x +9-1

8x^2-2x+8

can you rephrase the question ? it is unclear : -)

step-by-step explanation:

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