Find the product of: ( + 2/7 2² ) (7 − ²and verify the result for n = -2.
Answers
Answered by
0
Step-by-step explanation:
Given Find the product of (n+2/7n²) and (7n-n²) and verify the result for n=-2
- We need to find the product of (n + 2/7 n^2) and (7n – n^2)
- (n + 2/7n^2) (7n – n^2)
- 7n^2 + 2/7n^2 (7n) – n^3 – 2/7 n^4
- 7n^2 + 2n^3 – n^3 – 2/7 n^4
- 7n^2 + n^3 – 2/7 n^4
- So we have n = - 2
- 7 (- 2)^2 + (- 2)^3 – 2/7 (- 2)^4
- 7 x 4 + (- 8) – 2/7 (16)
- 28 – 8 – 32 / 7
- 20 – 32 / 7
- 108 / 7 This is r. h.s
- Now consider (n + 2/7 n^2) (7n – n^)
- Substituting n = - 2 we get.s
- (- 2 + 2/7 (-2) )^2 (7 (- 2) – (- 2)^2)
- (-2 + 8/7) (- 18)
- (- 6/7) (- 18)
- = 108 / 7 This is l. h.s
- Therefore l. h.s = r. h.s
Reference link will be
https://brainly.in/question/33861075
Similar questions