因式分解(1)x²+8x+16(2)64x²+y²+16xy(3)y²+y+
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因式分解(1)x²+8x+16(2)64x²+y²+16xy(3)y²+y+¼
![因式分解(1)x²+8x+16(2)64x²+y²+16xy(3)y²+y+](/uploads/image/z/16717714-34-4.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%881%EF%BC%89x%26%23178%3B%EF%BC%8B8x%EF%BC%8B16%EF%BC%882%EF%BC%8964x%26%23178%3B%EF%BC%8By%26%23178%3B%EF%BC%8B16xy%283%29y%26%23178%3B%EF%BC%8By%EF%BC%8B%26%23)
1、x²+2×x×4+4²
=(x+4)²
2、=64x²+16xy+y²
=(8x)²+2×8x×y+y²
=(8x+y)²
3、=y²+2×y×1/2+(1/2)²
=(y+1/2)²
=(x+4)²
2、=64x²+16xy+y²
=(8x)²+2×8x×y+y²
=(8x+y)²
3、=y²+2×y×1/2+(1/2)²
=(y+1/2)²