(1)3X十6X一5=0 (2)4X一X一9=0,

(1)3X十6X一5=0 (2)4X一X一9=0, 3(2x一1)十5(1一2x)十2x十4=0怎么解 (一x十2x的平方十5)十(4x的平方一3一6x) 1/x^2一6x十8=1/x^2一4x十3x^2一6x十8和x^2一4x十3 x*2一3x十1=0则x*4十x*一4二多少 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 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)= 5x一3x十4一1十3=12 x二? 10(3x十2)一20=5(2X一1)一4(2x十1) 2x一1/3(x+1)=4x一(2X十1/2) 5x十2x=42 15十2x一3=48 2x十3x十17=37 6x一3x=6÷5 9x一2x=15x十2x=4215十2x一3=482x十3x十17=376x一3x=6÷59x一2x=1.4十0.077(2x一6)=15.4 (2x三次方一x十6)x(3x2十5x一2) (x十3)(x十4)一x(x+2)一5 x^2(x十3)十x(x^2一3)十3x(x^2+x一1) 用不用化到x(5x^2十6x一6) 数学题 一(x2十3X)十2(4X十x2),其中X=一2 5x一3/4x平方一9一6x十9/4x平方一9十3x+15/4x平方9=? 3一(2x一1)≥5x十4,2分之x一3 3x(2x十1)一(2x十3)(2x十3)(x一5)