怎样计算“x十x÷3十2x一30=180”
怎样计算“x十x÷3十2x一30=180”
计算:6x2一(2x一1)(3x一2)十(x十2)(x一2)一x(x十7)这题怎么做?
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)=
解方程:(x一3)(x十1)=x(2x十3)一(x的平方十1)
计算:/3一x/十/x一1/(x>5)
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
X.(X十1)x(X十2)x(x十3) =360
3x十7x十5x一7x=17十18
(X十2)(X一13)一16=(X十3)( )
5(x十20)一3(x十7)=100怎样解方程
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一)(X十3)=3X十5