Transcription of Chapter 1
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Chapter 1
Chapter 1. Exercise 1. (i) coefficient of x2 3. (ii) coefficient of x 9. (iii) independent term 5. 2. (i) degree 2. (ii) degree 3. (iii) degree 4. 4 4x 1, 1 is not a positive power;. 3. ___. x _3 3. x 2 , __ is not an integer. 2. 4. (i) 3x2 6x 7 5x2 2x 9 8x2 4x 2. (ii) x3 4x2 5x 3x3 6x2 x 4x3 2x2 6x (iii) x(x 4) 3x(2x 3) x2 4x 6x2 9x 7x2 5x (iv) 3(x2 7) 2x(3x 1) 7x 2 3x2 21 6x2 2x 7x 2. 9x2 9x 19. 5. (i) 3x2(4x 2) 5x2(2x 5) 12x3 6x2 10x3 25x2. 22x3 19x2. (ii) x3(x 2) 4x3(2x 6) x4 2x3 8x4 24x3. 9x4 26x3. (iii) x(x3 4x2 7x) 3x2(2x2 3x 4) x4 4x3 7x2 6x4 9x3 12x2. 7x4 5x3 5x2. (iv) 3x(x 7x 1) 2x (6x 5) 3x 21x2 3x 12x3 10x2.
4 Text & Tests 4 Solution 19. (3x2 5x 1)(2x2 6x 5); x2 coeffi cients include 15x2 30x2 2x2 47x2 coeffi cient of x2 47. 20. (i) 3_____x 6 3 x 2 (ii) x 2 2x x x 2 (iii) 3x 3 26x2 3x 3x (x 2) 3x x(x 2) x2 2x (iv) 15x2y 10xy2 5xy = 3x 2y 21. (i) 6x2y 9xy2 3xy …
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