Question

Simplify

(i). (a + b) (2a – 3b + c) – (2a – 3b) c.

(ii). (x + y)(2x + y) + (x + 2y)(x – y)

(iii). (a + b + c)(a + b – c)
Please answer​

Answer 1

Answer:

(i) = (a+b) (2a−3b+c)

(ii) = (x+y)(2x+y)

(iii) = (x+y)(2x+y)

Answer 2

Step-by-step explanation:

i) ab + 2a - 3b + c - 2a - 3b + c

2a-2a + 3b-3b + c+c

Ans - ab + 2c

ii) x + y + 2x + y + x + 2y + x - y

(x + 2x + x + x ) + (y + y + 2y - y)

5x + y

Ans - 5x + y

iii) (a+b+c) + (a + b- c)

(a+a) + ( b+b) + (c- c)

Ans - 2a + 2b

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