已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.
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![已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.](/uploads/image/z/5913786-66-6.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%A8a%2B1%E4%B8%A8%2B%EF%BC%88b-2%EF%BC%89%26%23178%3B%3D0%2C%E6%B1%825%EF%BC%88+3a%26%23178%3Bb%EF%BC%8Dab%26%23178%3B+%EF%BC%89%EF%BC%8D%EF%BC%88ab%26%23178%3B%2B3a%26%23178%3Bb+%EF%BC%89%E7%9A%84%E5%80%BC.%E5%B7%B2%E7%9F%A5%E4%B8%A8a%2B1%E4%B8%A8%2B%EF%BC%88b-2%EF%BC%89%26%23178%3B%3D0%2C%E6%B1%825%EF%BC%88+3a%26%23178%3Bb%EF%BC%8Dab%26%23178%3B+%EF%BC%89%EF%BC%8D%EF%BC%88ab%26%23178%3B%2B3a%26%23178%3Bb+%EF%BC%89%E7%9A%84%E5%80%BC.)
已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.
已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.
已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.
已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.已知丨a+1丨+(b-2)²=0,求5( 3a²b-ab² )-(ab²+3a²b )的值.
a=±1 b=2 代到后面的代数式里求值