乘法公式计算题
(1)(2x+y-z+10)(2x-y+z+10)(2)(a+b)^2(a-b)^2-(a^2+b^2)(a-b)(3)<(x-2y)(x+2y)>^2-<(x-2y)^...
(1)(2x+y-z+10)(2x-y+z+10)
(2)(a+b)^2(a-b)^2-(a^2+b^2)(a-b)
(3)<(x-2y)(x+2y)>^2-<(x-2y)^2-(x+2y)^2>^2
(4)(a-b-c)^2
(5)(x+2y-2/3)(x-2y+2/3) 展开
(2)(a+b)^2(a-b)^2-(a^2+b^2)(a-b)
(3)<(x-2y)(x+2y)>^2-<(x-2y)^2-(x+2y)^2>^2
(4)(a-b-c)^2
(5)(x+2y-2/3)(x-2y+2/3) 展开
展开全部
(1)(2x+y-z+10)(2x-y+z+10)
=[2x+10+(y-z)](2x+10-(y-z)]
=(2x+10)²-(y-z)² 你说的是这样吗???是的话我继续打
(2)(a+b)^2(a-b)^2-(a^2+b^2)(a-b)
(3)<(x-2y)(x+2y)>^2-<(x-2y)^2-(x+2y)^2>^2
(4)(a-b-c)^2
(5)(x+2y-2/3)(x-2y+2/3)
=[2x+10+(y-z)](2x+10-(y-z)]
=(2x+10)²-(y-z)² 你说的是这样吗???是的话我继续打
(2)(a+b)^2(a-b)^2-(a^2+b^2)(a-b)
(3)<(x-2y)(x+2y)>^2-<(x-2y)^2-(x+2y)^2>^2
(4)(a-b-c)^2
(5)(x+2y-2/3)(x-2y+2/3)
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是,继续打
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