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Ex 2.2, 1 - Find value of polynomial 5x - 4x2 + 3 at - Value of a polynomial at a given point

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Ex 2.2,1 - Chapter 2 Class 9 Polynomials - Part 2

 

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Ex 2.2,1 - Chapter 2 Class 9 Polynomials - Part 3

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Ex 2.2, 1 Find the value of the polynomial 5x -4x2 + 3 at (i) x = 0 Let p(x) = 5x – 4x2 + 3 Putting x=0 p(0) = 5 × (0) – 4 × (0)2 + 3 = 0 – 0 + 3 = 3 Ex 2.2, 1 Find the value of the polynomial 5x -4x2 + 3 at (ii) x = −1 Let p(x) = 5x – 4x2 + 3 Putting x = –1 p(-1) = 5 × (-1) – 4 × (-1)2 + 3 = -5 – 4 × (1) + 3 = -5 – 4 + 3 = -6 Ex 2.2, 1 Find the value of the polynomial 5x -4x2 + 3 at (iii) x = 2 Let p(x) = 5x – 4x2 + 3 Putting x = 2 p(2) = 5 × (2) – 4 × (2)2 + 3 = 10 – 4 × (4) + 3 = 10 – 16 + 3 = -3

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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 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.