3.2×5-2x=4.
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3.2×5-2x=4.3.2×5-2x=4.3.2×5-2x=4.3.2×5-2x=4.816-2X=4.816-4.8=2X11.2=2X解得:X=5.6
3.2×5-2x=4.
3.2×5-2x=4.
3.2×5-2x=4.
3.2×5-2x=4.8
16-2X=4.8
16-4.8=2X
11.2=2X
解得: X=5.6
1.2X-1=X+3 2.X+[2-1/2(X-4)]=2X+3 3.2X+3(2X-1)=16-(X+1) 4.X-3/2-4X+1/5=1
x-2/5x=3.2 x=
1.f(x)=x(x^2+1/x+1/x^3) 2.f(x)=(e^x+Inx)/x 3.f(x)=sinx(cosx+2^x) 4.f(x)=5log2(2x+1)
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
因式分解法解下列方程,1.x(x-3)=x 2.x²-6x+9=0 3.2(x+2)²-8=0 4.(2x-5)²-(x+4)²=05.x²+3x=0 6.x²-4x=0
因式分解法解下列方程,1.x(x-3)=x 2.x²-6x+9=0 3.2(x+2)²-8=0 4.(2x-5)²-(x+4)²=05.x²+3x=0 6.x²-4x=0
4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2)除2=71
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)=
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^5-2x^3+x=?
(x平方+7x+10)/(x平方+6x+5) × (x三次方+1)/(x平方+4x+4) ÷ (x平方-x+1)/x-2 其中,x=4.