求因式分解x²-6xy+8y²过程及答案
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求因式分解x²-6xy+8y²过程及答案
原始=x(x-2y)-4y(x-2y)=(x-2y)(x-4y)
(-2)×(-4)=8
(-2)+(-4)=-6
x²-6xy+8y²=(x-2y)(x-4y)
x²-6xy+8y²
=(x-2y)(x-4y)
求因式分解x²-6xy+8y²过程及答案
原始=x(x-2y)-4y(x-2y)=(x-2y)(x-4y)
(-2)×(-4)=8
(-2)+(-4)=-6
x²-6xy+8y²=(x-2y)(x-4y)
x²-6xy+8y²
=(x-2y)(x-4y)