ldcf.net
ǰλãҳ >> 1/3(xʮ1)ʮ3/4(6xʮ6)ʮ2/5xʮo.4=6 >>

1/3(xʮ1)ʮ3/4(6xʮ6)ʮ2/5xʮo.4=6

2һ5x3.4=10.6 ⣺2X-17=10.6 2X=27.6 X=27.62 X=13.8

3xʮ2.5x4=28 ⣺3x+10=28 3x=18 x=183 x=6

7*3=73+2=35

t=x²-2x+6, 򷽳̻Ϊ 1/t+1/(t-9x)+1/(t+15x)=0 (t-9x)(t+15x)+t(t+15x)+t(t-9x)=0 t²+6xt-135x²+t²+15xt+t²-9xt=0 3t²+12xt-135x²=0 t²+4xt-45x²=0 (t+9x)(t-5x)=0 t=-9x, t=5x t=-9x...

Եȣ֣Щ׺Ҫ

12.5x-0.25-2x=4; 0.5x=4.25 x=8.5 (2)߳63(5x+7/3)=2(6x-5/2)-(x+4) Ŵã15x+7=11x-14 4x=-21 x=-21/4

3/2һ1/4(x/2һx/4һ2)=1/10(5xһ5(Xʮ3)/4)3/2һx/16ʮ1/2=1/10(15X/4һ15/4)2һX/16=3x/8һ3/819/8=7x/16x=38/7

1/2{1/3[1/4(1/5x-2)-6]+x}=1 [1/4(1/5x-2)-6]+6x=6 1/5x-2-24+24x=24 x-130+120x=120 121x=250 x=250/121

3/5x-1/6=2/3 2x+0.8=4 ⣺3/5x-1/6+1/6=2/3 +1/6 ⣺ 2x=4-0.8 3/5x=2/3 +1/6 x=1.6 3/5x=5/6 3/5x3/5=5/63/5 x=1/2 0.4x(x-1.2)=1.2 ⣺ x-1.2=3 x=3+1.2 x=4.2 10/9x-1/3x=21 ⣺ 7/9x=21 x=21x9/7 x=27 3/4x-1/2=1/4 ⣺ 3/4x-1/2+1/...

ɶ˼

վҳ | վͼ
All rights reserved Powered by www.ldcf.net
copyright ©right 2010-2021
磬ַϵͷzhit325@qq.com