(x-1)×(x+1)+x=19怎么解啊?

(x-1)×(x+1)+x=19怎么解啊? x(x+1)-x(x-1)=188怎么解, x(x+1)-x(x-1)=188怎么解, x*x+2*x+1=36,x怎么解, (3)/(x)+(5)/(2x-1)=(x+27)/2x^2-x怎么解啊! (x+3)(x+2)(x+1)x=3024详细的怎么解啊? (x+1)^x=10 怎么解. x(x+1)=240 怎么解 x[x-1]=50怎么解 x+1/X=2.5怎么解, x[x+1]=50怎么解 X(X-1)=90怎么解 x-0.8x=1怎么解 x+1/x=8.125怎么解 9x=x+1怎么解 (X-1)X=15.75怎么解 9x=x+1怎么解 x(x+1)=80怎么解