(x-3)2+(x+4)2-(x-5)2=17x+24
来源:百度知道 编辑:UC知道 时间:2024/06/28 02:53:38
(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*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)
2|x|+|x+1|--|3--x|=2x+4
|x|+|x+2|+|x+3|+|x+4|的最小值是多少?
(x+1)(x+2)(x+3)(x+4)-24因式分解
因式分解(X+1)(X+2)(X+3)(X+4)+1
(X+2)(X+3)(X-4)(X-5)=144
(X+2)(X+3)(X+4)(X+5)+1
2x-3x+4x+55=10x