4X4.5-3x=6.33
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4X4.5-3x=6.334X4.5-3x=6.334X4.5-3x=6.333.89
4X4.5-3x=6.33
4X4.5-3x=6.33
4X4.5-3x=6.33
3.89
4X4.5-3x=6.33
4x4.5X-3X=6.33 解方程
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
6x+4(2x-1)+3x4(45-3x4)=171
因式分解x4-3x-4
用矩阵法姐方程组:2x1-3x2 +x 3-x4 =3 3x 1+x2 +x3 +x 4=0 4x1 -x2 -x 3-x4 =7 -2x 1-x3 +x3 +x4 =-5
若x4次方+x平方+1分之x平方=1/4,那么3x平方分之5x4次方-15x平方+5的值为多少
19x-5(3x4)=24求x=?
2/3x=(88-x)X4/5 怎么算
求线性方程组一般解2x1+x^2-x3+x4=13x1-2x^3+x3-3x4=4x1+4x^2-3x3+5x4=-2
线性代数题,求详解设X1,X2,X3,X4是方程X^4+3X^2+4X+5=0的四个根,求D=| X1 X2 X3 X4 | 的值| X4 X1 X2 X3 || X3 X4 X1 X2 || X2 X3 X4 X1 |
x1-x2+x3=1x2-x3+x4=21若x1,x2,x3,x4,x5满足方程组 x3-x4+x5=3x4-x5+x1=4x5-x1+x2=5求x2 x3 x4的值2已知 x1+x4+x6+x7=39 x2+x4+x5+x7=49 x3+x5+x6+x7=41 x4+x7=13 x5+x7=14 x6+x7=9 x1+x2+x3+x4+x5+x6+x7=9求x7的值若x1,x2,x3,x4,x5满足方程组 x1-x
分解因式:x4-x3+4x2+3x+5
x4次方-5x²+4=0 解方程
方程,(3+x)X0.4=30X4/25
x1+5x2+2x3-4x4=3 -3x1-2x2+3x3+4x4=-6 -x1+3x2-x3-4x4=-2 -2x1+6x2+4x3+4x4=-5 2x1+13x2+3x3-12x4=4x是英文字母
4^2=4X4,463=4X4X4,则4^2X4^3=(4x4)x(4x4X4)=4X4X4X4X4=4^5,试计算a^m·a^n(m,n是正整数)
x²+3x-5=0,则代数式x4-4x²+45x+3的值是?