√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简
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√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简√2
√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简
√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简
√2/2x(-3√10/10)-√6/2x√10/10+√3/2x√5/5-1/2x2√5/5化简
xy²/(x²y-y) × x²/(x²+x)=(x²-3x)/(x²-5x) × 2x-10/(x²-6x+9)=化简求植x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1
xy²/(x²y) - y×x²/(x²+x)=(x²-3x)/(x²-5x×2x) - 10/(x²-6x+9)=2a/(a²-4) - 1/(a-2)=2/(1-a ) - 1/(a-1)=x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1
帮个忙 求你们了 急用xy²/(x²y-y) × x²/(x²+x)=(x²-3x)/(x²-5x) × 2x-10/(x²-6x+9)=化简求植x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1
已知x=5-2√6,求3x^4-28x^3-17x^2+2x-10
用换元法解下列方程.1.x^2-3x-6+√(x^2-3x)=02.3x^2+15x+3+2√(x^2+5x+1)=53.√[1+5/(x-1)]+√[1-5/(x+4)]=10/34.√(x^2+3x+7)-√(x^2+3x-9)=2
十字相乘法 1.x²-3xy+2y² 2.x²+4x+3 3.x²-6x+5 4.x²+5x-14 5.x²-4x-21 6.x²-3x-10 7.x²-x-2 8.x²-(1+√3)x+√3
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)×(x²√1/x×5x√y/x)的值
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)-(x²√1/x-5x√y/x)的值
已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y³)-(x²√(1/x)-5x√(y/x)的值
1、x^2+10x+21=02、x^2-x-1=03、3x^2+6x-4=04、3x(x+1)=3x+35、4x^2-4x+1=x^2+6x+96、7x^2-√6x-5=0
x^2+10x+21=0x^2-x-1=03x^2+6x-4=03x(x+1)=3x+34x^2-4x+1=x^2+6x+97x^2-√6x-5=0
化简:[√(x^2-6x+9)/x^2-x-12]*(x^3-16x)/(x^2-3x)-1/(x+3) {x>3}
100分x^3(2x-5)(x+1)+(5x+2)(x-1)=0x^2/3+48/x^2=10(x/3-4/x)√x-1+√2x-3+√3x-5+√4x-5=5x-6
求√(x^2+6x+10) + √(x^2-4x+8) 的最小值
√(4+x^2)=√(x^2-6x+10) x=?
f[x -x/8-x*x]=√2 10求x^2 20x^10 x
计算:½√8x³-3x√2/x+6x√x/18
x^4+√5x^3-11x^2-√5x+10因式分解.