因式分解两题36a²-16,-2x²y+8xy-8y

因式分解两题36a²-16,-2x²y+8xy-8y
因式分解两题36a²-16,-2x²y+8xy-8y

因式分解两题36a²-16,-2x²y+8xy-8y
36a²-16,
=（6a+4）(6a-4)
=4(3a+2)(3a-2)
-2x²y+8xy-8y
=-2y(x²-4x+4)
=-2y(x-2)²
如果本题有什么不明白可以追问,

36a²-16=4(3a+2)(3a-2)
-2x²y+8xy-8y=2y(-x^2+4x-4)=-2y(x^2-4x+4)=-2y(x-2)^2
可追问 望采纳