帮我算几道初二分解因式的题分解因式:1.9x²-30xy+_______=(3x-__________)2.ax²+bx+c=(2x-1)(3x+2)则a=?b=?c=?以上二题为填空题 1.1/9a²-2/3a+12.(x²+4)²-16x²3.y²-9(x+y)²4.x(x-y)²-y(y
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![帮我算几道初二分解因式的题分解因式:1.9x²-30xy+_______=(3x-__________)2.ax²+bx+c=(2x-1)(3x+2)则a=?b=?c=?以上二题为填空题 1.1/9a²-2/3a+12.(x²+4)²-16x²3.y²-9(x+y)²4.x(x-y)²-y(y](/uploads/image/z/14218739-35-9.jpg?t=%E5%B8%AE%E6%88%91%E7%AE%97%E5%87%A0%E9%81%93%E5%88%9D%E4%BA%8C%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%E7%9A%84%E9%A2%98%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A1.9x%26sup2%3B-30xy%2B_______%3D%EF%BC%883x-__________%EF%BC%892.ax%26sup2%3B%2Bbx%2Bc%3D%282x-1%29%283x%2B2%29%E5%88%99a%3D%3Fb%3D%3Fc%3D%3F%E4%BB%A5%E4%B8%8A%E4%BA%8C%E9%A2%98%E4%B8%BA%E5%A1%AB%E7%A9%BA%E9%A2%98+1.1%2F9a%26sup2%3B-2%2F3a%2B12.%28x%26sup2%3B%2B4%29%26sup2%3B-16x%26sup2%3B3.y%26sup2%3B-9%28x%2By%29%26sup2%3B4.x%28x-y%29%26sup2%3B-y%28y)
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