0.9x=45解方程
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0.9x=0.27xx=0再问:谢谢您了再答:不客气如果你觉得有用,请采纳,谢谢
5.4X+X=12.86.4x=12.8x=2X-0.36X=160.64x=16x=25
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
8.8x+x=989.8x=98x=10
(1)35x+x=20, 1.6x=20, &n
7.5x+4.5x=2012x=20x=5/3
0.3+5x=0.85x=0.5x=0.1再答:3.6x=3.6x=1
x=8再问:过程再答:0.78-0.9x=0.060.9x=0.72x=0.8
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
再答:谢谢
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
0.9x=22.3x=24.8
3x-200×45%=603x-90=603x=150x=50
5再问:我要过程再答:(2.7+0.9)x=18x=18/3.6x=5
24x+x=025x=0-025x=0x=0
X=3.8-0.9再答:X=2.9
x=602(x/45)+x/90-x/60=12x/90+x/90-x/60=13x/90-x/60=16x/180-3x/180=1x=60