Question

x^2-2xy+ y^2 ,2x^2+xy-y^2,x^2-xy+2y^2 add the following in horizontal method
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Answer 1

Answer:

Add: 6a + 8b - 7c, 2b + c - 4a and a - 3b - 2c

Solution:

Horizontal Method:

(6a + 8b - 7c) + (2b + c - 4a) + (a - 3b - 2c)

= 6a + 8b - 7c + 2b + c - 4a + a - 3b - 2c

Arrange the like terms together, then add.

Thus, the required addition

= 6a - 4a + a + 8b + 2b - 3b - 7c + c - 2c

= 3a + 7b - 8c