作业帮(x-2)2=(2x+5)2
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(x-2)2=(2x+5)2
(x-2)2=(2x+5)2
(x-2)2=(2x+5)2
(x-2)2=(2x+5)2
x-2=±(2x+5)
x-2=2x+5
x=-7
x-2=-2x-5
3x=-3
x=-1
你好，很高兴为你回答这个问题。x=-7
(x-2)²=(2x+5)²
x²-4x+4=4x²+20x+25
3x²+24x+21=0
x²+8x+7=0
（x+1）（x+7）=0
x=-1或-7
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填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
f(x,-x)=x^2+2x,fx(x,-x)=5x+1,则fy(x,-x)=
f(x)=x^2+x (x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^5-2x^3+x=?
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
5x/(x-2)-2=3(x-2)/x
7x^2-5x=2x^2+x
2x(x-1)-x(2x-5)=15