121(x-y)²-169(x+y)²答案是-4(12x+y)(x+12y)但我要的是详细的过程.十分钟内搞定!
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![121(x-y)²-169(x+y)²答案是-4(12x+y)(x+12y)但我要的是详细的过程.十分钟内搞定!](/uploads/image/z/5168485-37-5.jpg?t=121%EF%BC%88x-y%EF%BC%89%26sup2%3B-169%EF%BC%88x%2By%EF%BC%89%26sup2%3B%E7%AD%94%E6%A1%88%E6%98%AF-4%EF%BC%8812x%2By%EF%BC%89%EF%BC%88x%2B12y%EF%BC%89%E4%BD%86%E6%88%91%E8%A6%81%E7%9A%84%E6%98%AF%E8%AF%A6%E7%BB%86%E7%9A%84%E8%BF%87%E7%A8%8B.%E5%8D%81%E5%88%86%E9%92%9F%E5%86%85%E6%90%9E%E5%AE%9A%21)
121(x-y)²-169(x+y)²答案是-4(12x+y)(x+12y)但我要的是详细的过程.十分钟内搞定!
121(x-y)²-169(x+y)²
答案是-4(12x+y)(x+12y)
但我要的是详细的过程.
十分钟内搞定!
121(x-y)²-169(x+y)²答案是-4(12x+y)(x+12y)但我要的是详细的过程.十分钟内搞定!
121(x-y)²-169(x+y)²
=[11(x-y)]^2-[13(x+y)]^2
=[11(x-y)+13(x+y)][11(x-y)-13(x+y)]
=(24x+2y)(-2x-24y)
=-4(y+12x)(x+12y)
121(x²-2xy+y²)-169(x²+2xy+y²)
=-48x²-580xy-48y²
=-4(12x²+145xy+12y²)
=-4(12x+y)(x+12y)
121(x-y)²-169(x+y)²
=-4(12x+y)(x+12y)
原式=[11(x-y)]^2-[13(x+y)]^2
=(11x-11y)^2-(13x+13y)^2
=(11x-11y+13x+13y)(11x-11y-13x-13y)
=(24x+2y)(-2x-24y)
=-4(12x+y)(x+12y)
121(x-y)²-169(x+y)²
=[11(x-y)]²-[13(x+y)]²
=[11(x-y)+13(x+y)][11(x-y)-13(x+y)]
=(24x+2y)(-2x-24y)
=-4(y+12x)(x+12y)
二十分就是超高?
=(11(x-y)-13(x+y))*(11(x-y)+13(x+y))
=(-2x-24y)*(24x+2y)
=-2*(x+12y)*2*(12x+y)
=-4*(12x+y)*(x+12y)
121(x-y)²-169(x+y)²
原式=11²(x-y)²-13²(x+y)²
=[11(x-y)+13(x+y)]*[11(x-y)-13(x+y)]
=(11x-11y+13x+13y) *(11x-11y-13x-13y)
=(24x+2y) (-2x-24y)
=2*(12x+y) *(-2)(x+12y)
=-4(12x+y)(x+12y)
121*(X-Y)*(X-Y)-169*(X+Y)*(X+Y)
=11*11*(X-Y)(X-Y)-13*13*(X+Y)*(X+Y)
=(11X-11Y)2-(13X+13Y)2
=(11X-11Y+13X+13Y)(11X-11Y-13X-13Y)
=(24X+2Y)(-2X-24Y)
=(2)*(12X+Y)*(-2)*(X+12Y)
=-4(12X+Y)(X+12Y)