3√5x+6√3=√5x √6x+2√2＜0 怎么算.

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 若x=√2,求代数式[(x^2-2x+4)/(√x^2-4x+4)]/[(x^3+8)/(x^2-4)]*[|6-x|/(x^2-5x-6)-[1/(x^2-x+1)]^-1的值 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 4x^2 +6x - [5 √(2x^2+3x+9) ] +15=0 已知x=1+√5,求x^3-x^2-6x+1的值. y=(3x^2-x√x+5√x-9)/√x 求导 *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 解方程√x^2+5x-6+√3x^2-8x+5=3x-3 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 已知x=(3-√5)/2,则x^3-3x^2+3x+(6/(x^2+1))=? 设x=2-√3,求x^4-5x^3+6x^2-5x的值 设x=√3 -2,则x^6+3x^5+11x^3+2x+1=_____ 先化简,在求值x-2/2x-6÷(-5/(x-3)-x-3),其中x=√2-2 已知x=5-2√6,求3x^4-28x^3-17x^2+2x-10 代数式 当x=√2时 求X^2+7X+4/X^3-X^2-6X + X^2+6X+5/X^2-2X-3 的值 因式分解 x=√2时 求X^2+7X+4/X^3-X^2-6X + X^2+6X+5/X^2-2X-3 的值 已知x=√2-1,求x^5-2x^3+6x^2-7x+2的值