kirinaallison
kirinaallison kirinaallison
  • 14-06-2018
  • Mathematics
contestada

Find the difference (4w2 – 7w – 6) – (8w2 + 2w – 3) A.–4w2 – 9w – 3 B.–4w2 – 5w – 9 C.12w2 – 5w – 9 D.12w2 + 9w + 3

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claudettoterohil
claudettoterohil claudettoterohil
  • 14-06-2018
Simplify: (4w^2 - 7w - 6) - (8w^2 + 2w - 3)
Distribute the negative sign:
 = 4w^2 - 7w - 6 +  - 1(8w^2 + 2w - 3)
= 4w^2  +  - 7w  +   - 6 +  - 1(8w^2)  +  - 1(2w) + (- 1)( - 3)
= 4w^2 +  - 7w +  - 6 +  - 8w^2 +   - 2w + 3

Combine Like Terms:
= 4w^2 +  - 7w +  - 6 + 8w^2 +   - 2w + 3
=(4w^2 +  - 8w^2) + (- 7w +  - 2w) + (- 6 + 3)
=  - 4w^2  +   - 9w +  - 3

Answer:   - 4w^2  - 9w - 3



hope that helps!!!


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