龙和鳄鱼:(x-3)2+(x+4)2-(x-5)2=17x+24

来源：百度文库编辑：中科新闻网时间：2024/05/05 19:43:49

(x-3)2+(x+4)2-(x-5)2=17x+24
2x-6+2x+8-2x+10=17x+24
2x+12=17x+24
15x=-12
x=-3/5

(x-3)2+(x+4)2-(x-5)2=17x+24
2x-6+2x+8-2x+10=17x+24
2x+12=17x+24
x=-12/15=-4/5

(x-3)2+(x+4)2-(x-5)2=17x+24
解：去括号，得：2x-6+2x+8-2x+10=17x+24
移项，得：2x+2x-2x-17x=24+6-8-10
化简，得：-15x=12
系数化为一，得：x=-4/5

我的答案不会错，不信去检验看看^_^

(x-3)2+(x+4)2-(x-5)2=17x+24
2X-6+2X+8-2X+10=17x+24
2X+12=17X+24
2X=17x+24-12
2X=17X+12
X=4/5

答案是
x == -3 || x == 8

对
(x - 3)^2 + (x + 4)^2 - (x - 5)^2 - (17x + 24)
分解因式，得
(-8 + x) (3 + x)

x-3)2+(x+4)2-(x-5)2=17x+24
2x-6+2x+8-2x+10=17x+24
2x+12=17x+24
x=-12/15=-4/5

x^6+x^5+x^4+x^3+x^2+x+1=0 X*X-2X-1＝0 求2x*x*x-3*x*x-4*x+2 解方程(x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4) (x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4) 计算[(x-1)/(x-2)-(x-2)(x-3)-(x-3)/(x-4)+(x-4)(x-5)]/(2x-7) 谁会解这道题：(X-5)/(X-7)+(X-2)/(X-4)=(X-3)/(X-5)+(X-4)/(X-6)求X的值 2x^5-5x^4-11x^3+23x^2+9x-18 (x-4)(x-2)-(x-1)(x+3),其中x=-2/5 因式分解 3X^5+10X^4 - 15X^3 - 9X^2+8X+7 （x+1)(x+2)(x+3)(x+4)(x+5)+1因式分解