(a²+8a)²+22(a²+8a)+120求,这种题我不理解,
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![(a²+8a)²+22(a²+8a)+120求,这种题我不理解,](/uploads/image/z/14346964-28-4.jpg?t=%EF%BC%88a%26%23178%3B%2B8a%EF%BC%89%26%23178%3B%2B22%EF%BC%88a%26%23178%3B%2B8a%EF%BC%89%2B120%E6%B1%82%2C%E8%BF%99%E7%A7%8D%E9%A2%98%E6%88%91%E4%B8%8D%E7%90%86%E8%A7%A3%2C)
(a²+8a)²+22(a²+8a)+120求,这种题我不理解,
(a²+8a)²+22(a²+8a)+120求,这种题我不理解,
(a²+8a)²+22(a²+8a)+120求,这种题我不理解,
(a²+8a)²+22(a²+8a)+120
=(a²+8a+10)(a²+8a+12)
=【a²+8a+16-6】(a+2)(a+6)
=[(a+4)²-6](a+2)(a+6)
=(a+4+√6)(a+4-√6)(a+2)(a+6)