EXERCISE 7B
Factorise:
1. x2 - 36
4a²-9
4. 4x2 - 9y?
5., 16a? - 225b2
7. 16a? - 144
8. 63a2-112b2
10, 12x2-27
Y x - 64x
Bx 13. 3x5 - 48x
14. 16p-4p
8 CG) 1-b - c)?
17. (2a + 3b) - 16c2
19. (2x + 5y) - 1
* 20.) 36c2 - (5a + b)2
22. x2 - y² - 2y - 1
25-a?-b2 - 2ab
25. 9a? - bl +4b-4
26100 - (x - 5)
(27) Evaluate {(405)2 – (395)?}.
28. Evaluate {(7.8) - (2.2)"}.
3. 81 - 49x2
6. 9a²b2 - 25
9. 20a? - 45b2
12.16 x5 - 144 x
63a²b2-7
18. (l + m)? - (1 -m)2
21) (3x - 4y) - 25z2
24. 25a²-4b2+28bc-49c2
6, 2R, 239 28
Answers
Answered by
0
Answer:
the answer of the following are 225 - 28 + 7.8 plus 2 degree minus
Similar questions