Question

1. a - (b - 2a)
2. (a? + b2 + 2ab) – (a? + b2 - 2ab)
3. -4x2 + {(2x² – 3) - (4 - 3x?)}
4. a - [2b - {3a - (2b - 3c)}]​

Answer 1

Answer:

1. -b+3a

2. 4ab

3. 4a-4b+3c

Step-by-step explanation:

1. a-(b-2a)

= a-b +2a

= -b+3a

2. (a2+b2+2ab) - (a2+b2-2ab)

= a2+b2+2ab -a2-b2+2ab

=4ab

3. a- [2b-{3a-2b+3c}]

=a -[2b -3a+2b-3c]

= a- 4b +3a +3c

= 4a-4b+3c