1.(4a-b²)·(-2b) 2.2x²﹙x-1/2) 3.5ab·(2a-b+0.2) 4.﹙2a²-2/3a-4/9﹚·﹙-9a﹚
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![1.(4a-b²)·(-2b) 2.2x²﹙x-1/2) 3.5ab·(2a-b+0.2) 4.﹙2a²-2/3a-4/9﹚·﹙-9a﹚](/uploads/image/z/7307187-51-7.jpg?t=1.%EF%BC%884a%EF%BC%8Db%26%23178%3B%EF%BC%89%C2%B7%EF%BC%88-2b%EF%BC%89+2.2x%26%23178%3B%EF%B9%99x%EF%BC%8D1%2F2%29+3.5ab%C2%B7%EF%BC%882a%EF%BC%8Db%2B0.2%EF%BC%89+4.%EF%B9%992a%26%23178%3B%EF%BC%8D2%2F3a%EF%BC%8D4%2F9%EF%B9%9A%C2%B7%EF%B9%99-9a%EF%B9%9A)
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1.(4a-b²)·(-2b) 2.2x²﹙x-1/2) 3.5ab·(2a-b+0.2) 4.﹙2a²-2/3a-4/9﹚·﹙-9a﹚
1.(4a-b²)·(-2b)
2.2x²﹙x-1/2)
3.5ab·(2a-b+0.2)
4.﹙2a²-2/3a-4/9﹚·﹙-9a﹚
1.(4a-b²)·(-2b) 2.2x²﹙x-1/2) 3.5ab·(2a-b+0.2) 4.﹙2a²-2/3a-4/9﹚·﹙-9a﹚
1.-8ab+2b³
2.2x³-x²
3.10a²b-5ab²+ab
4.-18a³+6a²+4a