(2x+1)²-(x+3)(3-x)=6x怎么简便算?
(2x+1)²-(x+3)(3-x)=6x怎么简便算?
(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?
(3x+1)(9x^2-3x+1)-2x(3x+2)(3x-2) 怎么算或简便计算
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
例如:2x-3x+6x 简便运算我不知道怎么结合他,是2x-6x 还是2x+6x?
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
简便计算(x²-√2x+1/3)²
解方程:x(6-x)-2x(x+1)-(x^3-3x^4)/x²=4
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
6x+(2x²-3x)-(x²-1)
(x+5)²-(x-2)(x-3) =x²+10x+25-(x²-5x+6) *5x怎么来