(x+3):14=2:
(x^3)^()*x^2=x^14
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
5x+2=-8 x=30 3x=5x-14 x
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
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
3/2(x-14)-2(x+1)=2x
1..(3x+2)(x+3)=x+14
4x+5x+14=42-2(x+3)
x(x-14)二0*x平方十|2x十27=0,x平方=x+56,x(5x+4)=5x+4,4x平方-45=3|x,-3x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
x-1=3x+3 x-3=12-4x 6x-14=5x-10 x+1=2-4x
已知x^2-3x=2x+14求(4x^3-6x^2+2x)÷(2x)-(x+1)^2+1的值