(x²-4y²)-(x+2y)怎样因式分解?

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(x²-4y²)-(x+2y)怎样因式分解?(x²-4y²)-(x+2y)怎样因式分解?(x²-4y²)-(x+2y)怎样因式分解?(x&s

(x²-4y²)-(x+2y)怎样因式分解?
(x²-4y²)-(x+2y)怎样因式分解?

(x²-4y²)-(x+2y)怎样因式分解?
(x²-4y²)-(x+2y)
=(x+2y)(x-2y)-(x+2y)
=(x+2y)(x-2y-1)

(x²-4y²)-(x+2y)
=(x+2y)(x-2y)-(x+2y)
=(x+2y)(x-2y-1)

(x²-4y²)-(x+2y)
=(x-2y)(x+2y)-(x+2y)
=(x+2y)(x-2y-1)

=(x-2y)(x+2y)-(x+2y)=(x+2y)(x-2y-1)

(x²-4y²)-(x+2y)
=(x+2y)(x-2y)-(x+2y)
=(x-2y-1)(x+2y)

(x2-4y2)-(x+2y)
=(x+2y)(x-2y)-(x+2y)
=(x+2y) [(x-2y)-1 ]
=(x+2y) (x-2y-1 )