Question

add the following expressions .
1. 2x + 2y + z , y + z + 2yz and 3x - 2y
2. a + ab + b , a - 2 ab + b and a - b .
3. xy - y , yz - z and x + y + xy + yz . ​

Answer 1

Answer:

1] 2x + 2y + z , y + z + 2yz and 3x - 2y

= 2x + 2y + z + y + z + 2yz + 3x - 2y

= 5x + y + 2z + 2yz

2] a + ab + b , a - 2 ab + b and a - b

= a + ab + b + a - 2ab + b + a - b

= 3a - ab + b

3] xy - y , yz - z and x + y + xy + yz

= xy - y + yz - z + x + y + xy + yz

= 2xy + x + yz -z + yz

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