1.345*2.69-1.345^2-0.345^2计算过程是?
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1.345*2.69-1.345^2-0.345^2计算过程是?1.345*2.69-1.345^2-0.345^2计算过程是?1.345*2.69-1.345^2-0.345^2计算过程是?=1.3
1.345*2.69-1.345^2-0.345^2计算过程是?
1.345*2.69-1.345^2-0.345^2计算过程是?
1.345*2.69-1.345^2-0.345^2计算过程是?
=1.345*(2.69-1.345)-0.345^2
=1.345^2-0.345^2
=(1.345+0.345)*(1.345-0.345)
=1.69*1
=1.69
1.345*2.69-1.345^2-0.345^2
=-【1.345²-2×1.345×0.345+0.345²】
=-(1.345-0.345)²
=-1²
=-1
方法1:
1.345*2.69-1.345^2-0.345^2
=2*0.345*1.345-1.345^2-0.345^2-2*0.345*1.345+1.345*2.69
=-(1.345-0.345)^2+1.345*(2.69-2*0.345)
=-1+1.345*2
=1.69
方法2;
1.345*2.69-1.345...
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方法1:
1.345*2.69-1.345^2-0.345^2
=2*0.345*1.345-1.345^2-0.345^2-2*0.345*1.345+1.345*2.69
=-(1.345-0.345)^2+1.345*(2.69-2*0.345)
=-1+1.345*2
=1.69
方法2;
1.345*2.69-1.345^2-0.345^2
=13.45*1.345*2-1.345^2-0.345^2
=1.345^2-0.345^2
=(1.345+0.345)(1.345-0.345)
=1.69*1
=1.69
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1.345*2.69-1.345^2-0.345^2计算过程是?
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用简便运算计算 1.345×0.345×2.69-1.3453-1.345×0.3452
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