(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
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![(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)](/uploads/image/z/15200235-27-5.jpg?t=%EF%BC%88-1%2F2a%29%26%23178%3B%C2%B7%EF%BC%884ab%26%23178%3B%2B6ab-b%26%23178%3B%EF%BC%89%C2%B7%EF%BC%88-2a%26%23178%3Bb%EF%BC%89)
(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
=(-1/2a^4b)(4ab²+6ab-b²)
=-a^5b^3-3a^5b^2+1/2a^4b^3
(-1/2a)²·(4ab²+6ab-b²)·(-2a²b)
=-1/2a^4b²(4ab+6a-b)