Question

(a + b)(a - b) = a - b’ to evaluate :
KERCISE 12(A)
(v) (3x - 4y) (3x + 4y) (9x + 18y)
(II) (2a -b) (2a + b) (4a + b3)
owing
(iv) (3-2x) (3 + 2x) (9 +4x4)
4. Use the formula :
a-7)
(1) 21 x 19
(iii) 103 x 97
(v) 7.7 x 8.3
5. Evaluate :
() (6 - xy) (6 + xy)
(11) 33 x 27
(iv) 9.8 x 10.2
(vi) 4.6 x 5.4
5x)
- 4)
78 +
(ii)
+y)(7x-gy)
12 20
2b
a
2b
+
a
3x
3x +
1
(iv)
2y 2y
(v) (2a + 3) (2a - 3) (4a2 +9)
(vi) (a + bc) (a - bc) (a + b²c9)
(vii) (5x + 8y) (3x + 5y)
(viii) (7x + 15y) (5x – 4y)
(ix) (2a - 3b) (3a + 4b)
(x) (9a - 7b) (3a - b)​

Answer 1

Answer:

I am not able to understand this question