因式分解:1.4a+16ab+16b² 2.25a²-80a+64 3.3x³-6x²y+3xy²
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![因式分解:1.4a+16ab+16b² 2.25a²-80a+64 3.3x³-6x²y+3xy²](/uploads/image/z/1333508-68-8.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%9A1.4a%2B16ab%2B16b%26%23178%3B+2.25a%26%23178%3B-80a%2B64+3.3x%26%23179%3B-6x%26%23178%3By%2B3xy%26%23178%3B)
因式分解:1.4a+16ab+16b² 2.25a²-80a+64 3.3x³-6x²y+3xy²
因式分解:1.4a+16ab+16b² 2.25a²-80a+64 3.3x³-6x²y+3xy²
因式分解:1.4a+16ab+16b² 2.25a²-80a+64 3.3x³-6x²y+3xy²
1.4a+16ab+16b²
=4(a+4ab+4b²)
1.4a²+16ab+16b²
=4(a²+4ab+4b²)
=4(a+2b)²
2.25a²-80a+64
=(5a-8)²
3.3x³-6x²y+3xy²
=3x(x²-2xy+y²)
=3x(x-y)²
1.
4a²+16ab+16b²
=4(a²+2*a*2b+4b²)
=4(a+2b)²
2.
25a²-80a+64
=(5a)²-2*5a*8+8²
=(5a-8)²
3.
3x³-6x²y+3xy²
=3x(x²-2xy+y²)
=3x(x-y)²
1,解原式=4(a+4ab+b^2)
2解原式=(5a-8)^2
3,解原式=3x(x^2-2xy+y^2)
=3x(x-y)^2