Math, asked by swara7170, 6 hours ago

Find the product of: ( + 2/7 2² ) (7 − ²and verify the result for n = -2.​

Answers

Answered by knjroopa
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

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https://brainly.in/question/33861075

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