2x(x+3)+x=3
    2x^2+7x-3=
    sqrt(18+2*x^2)+sqrt(2*x^2-6*x+9)=3*sqrt(5)
    1*（1+x）∧5=2
    x(50-x)=450
    -x^2-50x-450=0
    （X-800-300）*（1-25%）/2200=0
    0.75X-600-225/2200=0
    0.75X-600-225/2200=0
    1400/（1+x）^5=1050
    1400/（1+x）^5=1050
    1400/（1+x）^5=1050
    ln(x)＝7.377906977
    ln(x)＝3.409883720
    x/5+5.4=x-783
    783+x=10x-5
    783+x=10x-5
    1-3/2*x=3*x+5/2
    1/4*x=1/2*x+3
    1/4*x=1/2*x+3

Home page << page1295 page1296 page1297 page1298 page1299 ... ... page1301 page1302 page1303 page1304 page1305 >> Last page 31237 pages in total