Finding value of expression

Last updated at April 16, 2024 by

Suppose we are given

  2x − 3

Let’s find its value for different value of x

 

For x = 1

2x − 3

     = 2 × 1 − 3

      = 2 − 3

      = −1

 

For x = 2

2x −3

      = 2 × 2 − 3

      = 4 − 3

      = 1

 

For x = 0

2x − 3

      = 2 × 0 − 3

      = 0 − 3

      = −3

 

Similarly

For 10x 2 − 10x + 10

 

For x = 1

10x 2 − 10x + 10

         = 10(1) 2 − 10 (1) + 10

         = 10 − 10 + 10

         = 10

 

For x = 2

10x 2 − 10x + 10

  = 10(2) 2 − 10(2) + 10

  = 10 × 4 − 10 × 2 + 10

  = 40 − 20 + 10

  = 20 + 10

          = 30

 

 

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.