1.2345²+0.7655²+2.469×0.7655=1.2345²+2×1.2345×0.7655+0.7655²=(1.2345+0.7655)²=2²=4(x+1/2y)(x²+1/4y²)(x-1/2y)=(x+1/2y)(x-1/2y)(x²+1/4y²...
(1)1.2345²+0.7655²+2.469×0.7655
1个回答
相关问题
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简算1.2345×1.2345+0.7655×0.7655+2.469×0.7655
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(1)1.2345^2+0.7655^2+2.469*0.7655
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1.2345^2+(0.7655)^2+2.469×0.7655-2.5^2
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1.2345^2+0.7655^2+2.469x0.7655=?
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求:1.2345^2+2.469*0.7655+0.7655^2 用公式法
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1.2345的平方+2.469乘0.7655+0.7655的平方等于多少?
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1.2345的平方+07655的平方+2.469×0.7655
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0.12345平方+0.7655平方+2.469乘0.7655
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2道算术题2005的平方=?1.2345的平方+0.7655的平方+2.469×0.7655=?这两道题有简便运算吗?怎
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计算:(1)1.23452+0.76552+2.469×0.7655=______;(2)19492-19502+195