9x²—( )=(3x+2x+2y)(3x-2x-2y)

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9x²—()=(3x+2x+2y)(3x-2x-2y)9x²—()=(3x+2x+2y)(3x-2x-2y)9x²—()=(3x+2x+2y)(3x-2x-2y)9x&s

9x²—( )=(3x+2x+2y)(3x-2x-2y)
9x²—( )=(3x+2x+2y)(3x-2x-2y)

9x²—( )=(3x+2x+2y)(3x-2x-2y)
9x²—(2x+2y )²=(3x+2x+2y)(3x-2x-2y)

9X方-(2x+2y)平方

x²+x+2x√(x+2)=144x²+2x√(3x²+x)+x-9=0 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- 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 1(x²-9)/(x²+2x²+x)*(3x³+9x²)/(x³-3x),其中x=-1/3 若18x²-45x=0,求代数式(15x²-18x+9)-(-3x²+19x-31)-8x的值.²=2次方若18x²-45x=0,求代数式(15x²-18x+9)-(-3x²+19x-31)-8x的值.²=2次方 3x² - 9x + 2 = 0 x² - 14x = 8 x² + 6x = 1 当X=-2时,9x+6x²-3(x-2/3x²)=? x²-9/x²+2x-3乘3x²-x-2/x²-5x+6, (3x-2y)²(3x-2y)²(9x²+4y²)² 1.(3x²+10x²+13x-27)/(x²+2x-3)2.(2x²+x³-2)/(x²-1)3.已知A=(3x)²-21x³-2x²+11x-2 B=3x³-5x²-4x+1求a²/b² 9x²—( )=(3x+2x+2y)(3x-2x-2y) 1.x²-2x-3 2.x²-5x-6 3.x²-9x-10 4.x²-9x-10 5.x²-2x-8 6.x²+2x-8 7.x²-x-12 8.x²+x-12 9.x²+6x-16 10.x²-14x-32 11.x²+7x-18 1.(3x²+2x-8)²-(x²-2x-8)²2.(x+2)(x+3)+x²-43.x²(a-b)+16(b-a)4.(x²+2x)²-7(x²+2x)-85.(x²+9y²)²-36x²y²6.(x-1)(x-2y-1)+y² 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 化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)注意了!是三个分式!(x²+3x+9)/(x²-27)+(6x)/(9x-x²)-(x-1)/(6+2x) 分解因式 (x²+3x+2)*(x²+7x+12)—120 代数式X²-3X+5=7,则3X²-9X-2=( ) 计算 (x²+3x+2)×(4x²+9x+3)-90