x(18-2x+2)=50

x+3x+x-2+x+x+50%x=188 求x 90-x=2x(18+x) x/(x^2+6x+18)=? 50/(x-50)=(x+18)/(2x-18) x(18-2x+2)=50 x+(x+3)+2x+(2x-18)=255 x^2=(x+30)X(x-18)怎么解 (x+1)+(x+2)+(X+3).+(x+50)=1325 f(x)=x^2+x (x x^2=x matlab中a(x)=x^4+3x^3+9x-18 b(x)=x^5-4x^3-18x+7 c(x)=x^7+6x^5+9x^3-5x^2-2 d(x)=x^9-8x^7+6x^5-4x^4+d(x)=x^9-8x^7+6x^5-4x^4+6x^2+3 求e(x)=a(x)*b(x)*c(x)*d(x) 解方程 式子 6-2x+3x=3x-4x+3x+18 6-x+3x=2x-5x+1 2x-1=5x-36-2x+3x=3x-4x+3x+18 6-x+3x=2x-5x+12x-1=5x-3 x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x^2+x^-2=x^4,化简(x+x^-1+x2)(x-x^-1+x²)（-x+x^-1+x²）(x+x^-1-x²)第18题, 已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值紧急,,明天有用,, x/x平方-x+2=2x/x+1 f(x)=x|x|+2x (x