(x+3)(x-3)(x2-+9)
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(x+3)(x-3)(x2-+9)(x+3)(x-3)(x2-+9)(x+3)(x-3)(x2-+9)(x+3)(x-3)(x2+9)=(x²-9)(x²+9)=x^4-81
(x+3)(x-3)(x2-+9)
(x+3)(x-3)(x2-+9)
(x+3)(x-3)(x2-+9)
(x+3)(x-3)(x2+9)
=(x²-9)(x²+9)
=x^4-81
(x2-3x)2-x(x2-3x)-2x2
5(x2-x)=3(x2+x)
(x+3)(x-3)(x2-+9)
(x+3)*(x2+9)*(x-3)=?
(x+3)(x+5)+x2-9
(x+3/x2-9+x/6+x-x2)(3-x/4x-6)
解方程:1/x2+x +1/x2+3x+2 +1/x2+5x+6 +1/x2+7x+12 +1/x2+9x+20=5/x2+11x-708解方程:1/x2+x +1/x2+3x+2 +1/x2+5x+6 +1/x2+7x+12 +1/x2+9x+20=5/x2+11x-708
x2+3x+9/x2-27+6x/9x-x2-x-1/6+2x 化简
化简x2+3x+9/x2-27+6x/9x-x2-x-1/6+2x
x2-3x
x2-2x-3
X2-2X-3
-x2+2x-3
3x2+5x
(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)
x2-3x+2/x2-2x-3x
(x-2)(x2-6x-9)-x(x-5)(x-3)其中x= -1/3
已知x2 3x-2=0,求2x-4╱x2 6x 9÷(x-3)×x2-9╱2x-x2的值