作业帮15x>23×-24 12+5x>3x-8
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/15 20:02:53
当X>15时,原式=X-5+X+10-(X-15)=X-5+X+10-X+15=X+20当5
2.8+0.3x=415*2-5x=233.4-3x=7x-4.620-6x+4x=100.3x=4-2.830-5x=23-3x-7x=-4.6-3.420-2x=100.3x=1.25x=30-2
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550120x=550x=55/12=4.583
5/x-4/x=151/x=15x=1/15
5x/64-x/25=15两边同时乘以1600得125x-64x=2400061x=24000x=24000/61很高兴为您解答,【学习宝典】团队为您答题.请点击下面的【选为满意回答】按钮.
原式=[(1-1分之x+5)-(1-1分之x+4))+(1-1分之x+3)-(1-1分之x+2)]*[(x+3)(x+5)]\(x^2+7x+13)=[(1分之x+2)-(1分之x+3)+(1分之x+
15x=23x-248x=24x=312+5x=3x-82x=-20x=-103(x-3)=9-(x+6)4x=9+9-6=12x=34+x=4x-173x=21x=7
(x+1)(x+3)(x+5)(x+7)+15=[(x+1)(x+7)][(x+3)(x+5)]+15=(x^2+8x+7)(x^2+8x+15)+15=(x^2+8x+7)[(x^2+8x+7)+8
主要是考察因式分解这方面的技能啊![(2x²-5x+2)/(6x²+13x+6)]*[(6x²-5x-6)/(6x²-17x+10)]*[(12x²+
设x1=4-√3,x2=4+√3,是方程X^2-8X+13=0的两根所以X1^2-8X1+15=2X^4-6X^3-2X^2+18X+23=(X+1)^2*(X^2-8X+13)+10=10所以原式=
(x+1)(x+3)(x+5)(x+7)+15=[(x+1)(x+7)][(x+3)(x+5)]+15=(x^2+8x+7)(x^2+8x+15)+15=(x^2+8x+7)[(x^2+8x+7)+8
(x+1)(x+3)(x+5)(x+7)+15=[(x+1)(x+7)][(x+3)(x+5)]+15=(x^2+8x+7)(x^2+8x+15)+15=(x^2+8x+7)[(x^2+8x+7)+8
(x+1)(x+3)(x+5)(x+7)+15=(x+1)(x+7)（x+3）（x+5）+15=(x²+8x+7)(x²+8x+15)+15=(x²+8x)²+
∵(x^4-4x^2+5x-15)/[(x^2+1)(x-2)]=[(x^4+x²-5x²-5)+(5x-10)]/[(x²+1)(x-2)]=[x²(x&su
再问：x^2+3x-10=_2x^2-5x-3=(x-3)()x^2+_-2y^2=(x-y)()a^2+n/ma+()=(_+_)^2x^4+5x^2-6m^4-6m^2+8x^4+10x^2+9再
15x＞23x-2423x-15x-10所以：-10
#includesintjiesheng(intn)//用于计算阶乘如：3!{if(n=1)rerunn;returnn*hh(n-1)}doubledigui(intn,intx)//用以计算y=x
2x等于x+15x等于15