X+120%X=44 30%X-18=54

(x+30)*(x-18)=x*x X+120%X=44 30%X-18=54 60％x+25=40 x+30％x=52 19-120％x=7 4分之3x-5％x=17.5 x-10％x=18 （1-25％）x=36 2x+30％x=9.2 X-X/12-X/7-X/8-X/4-X/20-X/5-30-120-300=50解方程 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. x^2=(x+30)X(x-18)怎么解 (30-x):(18+x)=(20+x):(32-x) （X+X)+(X-X)+(X*X)+(X/X)=100 30(x+5)=26x+10x(x+5) x+2/3x=60 x-3/5x=120 4x+18x=1x+2/3x=60 x-3/5x=120 4x+18x=132! x+3分之2 x=60 x-5分之3x=120 4x+18x=132x+3分之2 x=60 x-5分之3x=120 4x+18x=132 X+5X=18 证明(x+1)(X+3)(x+5)(x+7)+15=(X+8x)+22(x+8x)+120 x+2/3x=60 x-2/5x=120 4x+18x=132 x-三分之一x-四分之一x(x-三分之一x)=5 x*x*x*x*x=80000? 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