64(a+b)²-36(a-b)²怎么因式分解啊
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![64(a+b)²-36(a-b)²怎么因式分解啊](/uploads/image/z/7641877-13-7.jpg?t=64%28a%2Bb%29%26%23178%3B%EF%BC%8D36%EF%BC%88a%EF%BC%8Db%EF%BC%89%26%23178%3B%E6%80%8E%E4%B9%88%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E5%95%8A)
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64(a+b)²-36(a-b)²怎么因式分解啊
64(a+b)²-36(a-b)²
怎么因式分解啊
64(a+b)²-36(a-b)²怎么因式分解啊
64(a+b)²-36(a-b)²
=[8(a+b)+6(a-b)][8(a+b)-6(a-b)]
=(14a+2b)(2a+14b)
=4(7a+b)(a+7b)
28a^2+200ab+28b^2
64(a+b)²-36(a-b)²
=(8a+8b)²-(6a-6b)²
=(8a+8b+6a-6b)(8a+8b-6a+6b)
=(14a+2b)(2a+14b)
=4(7a+b)(a+7b)