9x-4.3x=7.05解方程
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4x=42x+844x-42x=84-38x=84x=-42/194x=4.3x-38.74-4.3x=-38.70.3x=38.7x=129很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选
两边乘(x+3)(x-3)x²-3x+6=x+3x²-4x+3=0(x-1)(x-3)=0x=1,x=3经检验,x=3时分母x-3=0增根,舍去所以x=1再问:�Ҳ�������ô
x=0
2x²-3x+2x²-2x=4x²-8x+9-5x=-8x+93x=9x=3
21.3=35.1x-x21.3=34.1xx=21.3÷34.1x=213/341(341分之213)(21.3-X)*X=35.121.3X-X²=35.1X²-21.3X+3
4/3x=20x=15
x=任意数好好学习,天天向上
把x移到左边=4x-x=93x=9x=3
8.8x+x=989.8x=98x=10
(1)35x+x=20, 1.6x=20, &n
x-9=0.5x-2x-0.5x=-2+90.5x=7x=14
6^x+4^x=9^x3^x*2^x+(2^x)^2=(3^x)^2,两边同除以(2^x)^2,(3/2)^x+1=[(3/2)^x]^2,设(3/2)^x=t,t+1=t^2,t^2-t-1=0,t
原式=2.1X-1X=111.1X=11X=11/1.1X=10
X^2+4X=60X^2+4X+2^2=60+2^2(X+2)^2=64X+2=8X=6
16x=1.44X=1.44/1.6=自己去算吧.
24x+x=025x=0-025x=0x=0
移项,用平方差公式求解
13.2X+9X=33.3,22.2X=33.3X=1.58X-3X=1055X=105X=21
13.2x+9x=33.322.2x=33.3x=33.3÷22.2x=1.5
9x-8.8x=3.4+80.2x=11.4x=11.4÷0.2x=57