八上数学题,因式分解 16(x-y)²-9(x+y)²=( )•(八上数学题,因式分解16(x-y)²-9(x+y)²=( )•( )
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![八上数学题,因式分解 16(x-y)²-9(x+y)²=( )•(八上数学题,因式分解16(x-y)²-9(x+y)²=( )•( )](/uploads/image/z/1029573-45-3.jpg?t=%E5%85%AB%E4%B8%8A%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3+16%28x-y%29%26%23178%3B-9%28x%2By%29%26%23178%3B%3D%28+%29%26%238226%3B%28%E5%85%AB%E4%B8%8A%E6%95%B0%E5%AD%A6%E9%A2%98%2C%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A316%28x-y%29%26%23178%3B-9%28x%2By%29%26%23178%3B%3D%28+%29%26%238226%3B%28+%29)
八上数学题,因式分解 16(x-y)²-9(x+y)²=( )•(八上数学题,因式分解16(x-y)²-9(x+y)²=( )•( )
八上数学题,因式分解 16(x-y)²-9(x+y)²=( )•(
八上数学题,因式分解
16(x-y)²-9(x+y)²=( )•( )
八上数学题,因式分解 16(x-y)²-9(x+y)²=( )•(八上数学题,因式分解16(x-y)²-9(x+y)²=( )•( )
16(x-y)²-9(x+y)²=(4x-4y+3x+3y)•(4x-4y-3x-3y)=(7x-y)•(x-7y)
16(x-y)^2-9(x+y)^2 =[4(x-y)]^2-[3(x+y)]^2 =(4x-4y+3x+3y)(4x-4y-3x-3y) 满意请采纳,谢谢!!
=(7x-y)(x-7y)