早教吧作业答案频道 -->其他-->
x^2+4y^2+4z^2+4xy-5xz-10yz
题目详情
x^2+4y^2+4z^2+4xy-5xz-10yz
▼优质解答
答案和解析
原式=(x²+4xy+4y²)-5xz-10yz+4z²
=(x+2y)²-5z(x+2y)+4z²
=(x+2y-z)(x+2y-4z)
=(x+2y)²-5z(x+2y)+4z²
=(x+2y-z)(x+2y-4z)
看了x^2+4y^2+4z^2+4...的网友还看了以下:
运用公式计算 (a+b)(a-b)(a2-b2)运用公式计算---过程!1.(a+b)(a-b)( 2020-05-16 …
分解因式:①(x+y)^2+4(x-y)^2-4(x^2-y^2);②x^2-9y^2+4z^2+ 2020-06-03 …
xyz=1,x+y+z=2,x^2+y^2+z^2=3,求x,y,z我解:xy=1/z,x+y=2- 2020-10-31 …
初一因式分解20:00前给分1.x平方+3x-(a平方+a-2)2.x平方-4xy+3y平方-x-y 2020-10-31 …
1.计算(x-y+4xy/(x-y))(x+y-4xy/(x+y))2.已知x/(x^2-x+1)= 2020-10-31 …
因式分解,.3x^3-12xx^2(x-2y)+y^2(2y-x)-16+p^49(a-b)^2-2 2020-10-31 …
已知x^2+3y^2+4z^2求证|x+3y+4z|x^2+3y^2+4z^2=2 2020-10-31 …
x^2-x+1/4-y^2(因式分解)(x^2-2xy)^2+2y^2(x^2-2xy)+y^4(因 2020-10-31 …
几道初二数学题1.计算(x-y+4xy/(x+y))(x+y-4xy/(x+y))2.已知x/(x^ 2020-10-31 …
因式分解,.3x^3-12xx^2(x-2y)+y^2(2y-x)-16+p^49(a-b)^2-2 2020-11-01 …