32×20-(20-x)(32-x)=100
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32×20-(20-x)(32-x)=100
32×20-(20-x)(32-x)=100
32×20-(20-x)(32-x)=100
32×20-(20-x)(32-x)=100
640-x²+52x-640=100
x²-52x+100=0
(x-2)(x-50)=0
x1=2 x2=50
X-20%X=32
(30-x):(18+x)=(20+x):(32-x)
x-2=(104-x)+2 6x-59=10x-75 (x+10)+(x-15)=280-x4(x-62)=x-38 60x-40=(60+20)*(x-5) 32x+32*0.5-25x+64x=24x+496-49x x+15=3*(109-x ) 5(3x-1.4)=2(6x-0.5) 3(x+0.9)=5(x-1.7) 13x-4(2x+5)=17(x-2)-4(2x-1) (13x+8)/3=5x-1x-60=2[(3561-x)+100]+1 (x+9)+12=2[(x-9)-1
(16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x
x*x*(1/4)=20x
(x-20)*3=x+32 求x
x/20=(x-32-32)/12
(20-X)(32-2X)=540
2x平方+32=20x
x-20%x=32分之9
(32-2x)*(20+x)=570
2(x+3)-5(1-x)=3(3-1) 4-3(2-x)=5x 4x-3(20-x)=6x-7(9-x) 4-3(2-x)=5x 4x-3(20-x)=6x-7(9-x)1/3 - x-1/2 = 1x+8/3=-x1-m/2 - 3-3m/4=1x-2/0.2 - x+1/0.5=32(x+3) - 5(1-x) = 3(x-1)4-3(2-x)=5x4x-3(20-x)=6x-7(9-x)
x/2+x/8+x/12+x/20=1
x/6+x/12+x/20+x/30=1
18%x+32%x=2 x+20%x=2.4 x+5%x=4.2 15%x+35%x=0.2
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)....
(16x-13)/(4x-3)+(40x-43)/(8x-9)=(32x-30)/(8x-7)+(20x-24)/(4x-5)
行列式f(x)===== 2x x 1 2 1 x 1 -1 1 1 x 2 x 1 2 x x的各项系数怎么求?行列式f(x)=====2x x 1 2 1 x 1 -1 1 1 x 2 x 1 2 xx的各项系数怎么求?自己写到2x-4 0 0 32 x 1 -13 1 x 20 1 2 x 然后呢?