2x十5=17,8x-3x=6.5,6x十3x=36,
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
2x十5=17,8x-3x=6.5,6x十3x=36,
X.(X十1)x(X十2)x(x十3) =360
3x十7x十5x一7x=17十18
5x十2x=42 15十2x一3=48 2x十3x十17=37 6x一3x=6÷5 9x一2x=1
2x十8十3x十8十4x十8=?请算出这道题目求士寸佰了⑥
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)=
x十5十x十6…=1000
4(X十3)=6x
2(x十3)=3(0.5x十10)
解方程(3x十3)(x十2)=x十14
7(x十4)=2(2一x)十3(4x一2) 6(2x一7)=5(x十8)十9 5(1十2x)=3(x一2)十3(17一x