X.(X十1)x(X十2)x(x十3) =360
X.(X十1)x(X十2)x(x十3) =360
已知1十x十x^2 十x^3=0,求x十x^2十x^3十x^4+x^5十x^6+x^7十x^8的值
解方程:(x一3)(x十1)=x(2x十3)一(x的平方十1)
1/(x^2一4x十3)十1/(x^2一8x十15)十1/(x^2-12x十35)十1/(x^2一16x十63)=
2x十8十3x十8十4x十8=?请算出这道题目求士寸佰了⑥
2(x十3)=3(0.5x十10)
4X十3(X十1)=31
解方程(3x十3)(x十2)=x十14
1十3十5十7十9十11十、、、、、、十99=()=()x()
(x^3十3x^2-5x十6)-(2x^2-5x十1)-(x^3十x^2-2)
(x十3)(x一3)十8>(x十5)(x一1)解不等式
3x十7x十5x一7x=17十18