What Is The Value Of The Expression When N 3 – Example 5 Find the value of the following expression when n = – 2. (i) 5n – 2 5n − 2 Putting n = −2 = 5 × (−2) − 2 = (−10) − 2 = − 12 Example 5 Find the value of the following expression when n = – 2. (ii) 5n2 + 5n – 2 5n2 + 5n – 2 Putting n = −2 = 5 (−2)2 + 5 ( -2) − 2 = 5 (4 ) − 10 − 2 = 20 − 12 = 8 Example 5 Find the value of the following expressions when n = – 2. (iii) n3 + 5n2 + 5n – 2n3 + 5n2 + 5n – 2 Putting n = −2 = ( − 2)3 + 5 (− 2)2 + 5 (−2) − 2 = (−8) + 5(4) − 10 − 2 = = −8 + 20 − 12 = 12 − 12 = 0
Davneet Singh did his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching for the past 13 years. It offers courses in Mathematics, Science, Social Science, Physics, Chemistry, Computer Science.
What Is The Value Of The Expression When N 3
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Math 20 1 Unit 7 Test
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