25X(0.4-Y)²+10Y（Y-0.4）²,其中X=0.04 Y=2.4 先分解因式在求值

(x+y)²-10(x+y)+25 （x+y)²-10(x+y)+25 4m²-9n²-4m+1 已知x²y²+x²+y²=10xy-16 求x,y 1.5a(m-n)-10a(m-n)2.(x+y)²（x-y）+（x+y）（x-y）²3.x²y²-0.044.-m²+1/165.9a²-12a+46.4x²+20xy+25y²7.x²+7x+128.x²-4xy-96y² (x-y)^2+10(y-x)+25因式分解 （x-y）²-10（y-x）+25（x-y）²+10（y-x）+25只要结果 25X(0.4-Y)²+10Y（Y-0.4）²,其中X=0.04 Y=2.4 先分解因式在求值 （x²+10xy+25y²)÷(x+5y) 分解因式 x²-y²-x-y因式分解 分解因式：4b²c²-(b²+c²-a²)² 25（x+y)²-16(x-y)² x²-6x+9 1.(x+y)²-4xy=( )²2.x²-（ ）+25y²=（ )²3.x²-8x²y²+16y四次方=（ ）²4.7.2²-2.8²= . 已知（x+y)²=25,（x-y)²=9,求xy与x²+y²的值 已知:x²-6x+8y+y²+25=0,求x²+2xy+y² (x+y)²=25,(x-y)²=9,求x²+y²和xy的值 x²+y²-2x-6y+10=0 求分式x²-y²/xy 若x²+y²+4x-10y+29=0,则x²y+xy²= ( x²+y²-10x-10y=0 ,x²+y²-6x+2y-40=0 )求出x,y 已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y 就是已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y /4y就是除以4y x²-6x+y²+8y+25=0 则x= y=