2a-[4b-{4a(3b-2a+2b)}]
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Answer:
2a-4b+20ab-8a²
Step-by-step explanation:
2a-[4b-{4a(5b-2a)}]
=2a-[4b-{20ab-8a²}]
=2a-[4b-20ab+8a²]
=2a-4b+20ab-8a²
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