(3x+10)^2=9(2x+3)^2

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/17 19:34:42

(3x+10)^2=9(2x+3)^2

(3x+10)^2=9(2x+3)^2
(3x+10)^2-9(2x+3)^2=0
(3x+10)^2-(6x+9)^2=0
(3x+10+6x+9)(3x+10-6x-9)=0
(9x+19)(-3x+1)=0
x=-19/9或x=1/3
不懂得欢迎追问...
再问：不好意思题目出错了应该是(3x+1)^2=9(2x+3)^2
再答：大哥你知道做一道题要多久不能不能细心点？ (3x+1)^2=9(2x+3)^2 (3x+1)^2-9(2x+3)^2=0 (3x+1)^2-(6x+9)^2=0 (3x+1+6x+9)(3x+1-6x-9)=0 (9x+10)(-3x-8)=0 x=-10/9或x=-8/3

y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10), x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少已知x=9/2 求:[(x^+7x+10)/(x^2+6x+5)]×[(x^3+1)/(x^2 x+x^2+x^3+…+x^9+x^10=a0+a1(1+x)+a2(1+x)^2+…a9(1+x)9+a10(1+x) f(x)=1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+.1/(x+9)(x+10) 求 x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x 1/x+1/x(x+1)+1/(x+1)(x+2)+1/(x+2)(x+3)+...1/(x+9)(x+10)=0