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S.chand books class 8 maths solution chapter 14 Factorisation exercise 14 E

EXERCISE 14 E


1. x^2 – 9
2. x^2 – 4
3. a^2 – 25
4. p^2 – 1
5. 16a^2 – 121
6. 16x^2 – 25y^2
7. 36m^2 – 169n^2
8. -64 + 25x^2
9. x^2y^2 – a^2
10. x^4 – 9
11. a^8 – 36
12. x^6 – 16
13. 1 – 4c^12
14. 25x^8 – 49y^8
15. 2.25a^2 – b^2
16. x^2y^2 – 0.81
17. 25p^2 – \dfrac{1}{9}
18. \dfrac{16a^2}{25b^2} – \dfrac{x^2}{100y^2}
19. -36 + \dfrac{1}{49}m^2
20. \dfrac{4}{9}p^2 – \dfrac{25}{38}q^2

21. Find the value of :
(i) 2003^2 – 1997^2
(ii) 100.6^2 – 99.4^2

22.Simplify:

(i) \dfrac{5682\times 5682-3432\times 3432}{5682+3432}
(ii) \dfrac{4.987\times 4.987-3.013\times 3.013}{4.987-3.013}

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