先去括号,再合并同类项.(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4).今天就要,明天要交的,
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![先去括号,再合并同类项.(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4).今天就要,明天要交的,](/uploads/image/z/2008069-61-9.jpg?t=%E5%85%88%E5%8E%BB%E6%8B%AC%E5%8F%B7%2C%E5%86%8D%E5%90%88%E5%B9%B6%E5%90%8C%E7%B1%BB%E9%A1%B9.%EF%BC%885a%26%23179%3B-2a%26%23178%3B-3%EF%BC%89-%EF%BC%881-3a%26%23178%3B%2B2a%26%23179%3B%EF%BC%89-%EF%BC%88-2a%26%23179%3B%2Ba%26%23178%3B-4%EF%BC%89.%E4%BB%8A%E5%A4%A9%E5%B0%B1%E8%A6%81%2C%E6%98%8E%E5%A4%A9%E8%A6%81%E4%BA%A4%E7%9A%84%2C)
先去括号,再合并同类项.(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4).今天就要,明天要交的,
先去括号,再合并同类项.
(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4).
今天就要,明天要交的,
先去括号,再合并同类项.(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4).今天就要,明天要交的,
(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4)
=5a³-2a²-3-1+3a²-2a³+2a³-a²+4
=5a³
(5a³-2a²-3)-(1-3a²+2a³)-(-2a³+a²-4)
=5a³-2a²-3-1+3a²-2a³+2a³-a²+4
=10a³-3a²