解几个一元二次方程,1.4(1+x)²=4.842.3125(1-x)²=20003.8000(1+x)²=96804.100(1+x)²=1215.600(1-x)²=3846.60(1+x)²=72.6
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![解几个一元二次方程,1.4(1+x)²=4.842.3125(1-x)²=20003.8000(1+x)²=96804.100(1+x)²=1215.600(1-x)²=3846.60(1+x)²=72.6](/uploads/image/z/5625775-55-5.jpg?t=%E8%A7%A3%E5%87%A0%E4%B8%AA%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%2C1.4%281%2Bx%29%26%23178%3B%3D4.842.3125%281-x%29%26%23178%3B%3D20003.8000%281%2Bx%29%26%23178%3B%3D96804.100%281%2Bx%29%26%23178%3B%3D1215.600%281-x%29%26%23178%3B%3D3846.60%281%2Bx%29%26%23178%3B%3D72.6)
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解几个一元二次方程,1.4(1+x)²=4.842.3125(1-x)²=20003.8000(1+x)²=96804.100(1+x)²=1215.600(1-x)²=3846.60(1+x)²=72.6
解几个一元二次方程,
1.4(1+x)²=4.84
2.3125(1-x)²=2000
3.8000(1+x)²=9680
4.100(1+x)²=121
5.600(1-x)²=384
6.60(1+x)²=72.6
解几个一元二次方程,1.4(1+x)²=4.842.3125(1-x)²=20003.8000(1+x)²=96804.100(1+x)²=1215.600(1-x)²=3846.60(1+x)²=72.6
1.x=0.1 x=-2.1
2.X=1/5 X=9/5
3.X=1/10 X=-21/10
4.X=1/10 X=21/10
5.X=-7/5 X=17/5
6.X=1/10 X=-21/10
1 0.1
2 3/5
3 0.1
4 0.1
5 0.6
6 0.1
这几个问题都是一个类型,用直接开平方法就行。你试试吧
1.x=0.1;
2.x=0.2;
3.x=0.1;
4.x=0.1;
5.x=0.2;
6.x=0.1