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Question

Add the following expression.
(i) 2a + b + 7 ; 4a + 2b + 3
(ii) 3x + y - 8; y + 4 -7x
(iii) 3x2 + 5x - 4 ; 8x - 2x2 + 11
(iv) 5x - 4y + 2; 2x + 7y - 5

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Solution

(i)

2a + b + 7
4a + 2b + 3
---------------------
6a + 3b + 10


(ii)

3x + y - 8
- 7x + y + 4
---------------------
-4x + 2y - 4


(iii)

3x2 + 5x - 4
-2x2 + 8x + 11
---------------------
x2 + 13x + 7


(iv)

5x - 4y + 2 2x + 7y - 5 7x +3y - 3

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