b - [ b - (a+b) - { b(b - a + b )} + 2a ] = ?
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Answer:
b-a+2b²-ab
Step-by-step explanation:
b- [ b - (a+b) - { b(b - a + b )} + 2a ]
=b-[b-a-b- {b(2b-a)}+2a]
=b-[-a-{2b²-ab}+2a]
=b-[-a-2b²+ab+2a]
=b+a+2b²-ab-2a
=b-a+2b²-ab
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