计算 (x+3y-2z)(x-3y+2z)2 (a+b+c-2)(a+b-c+2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 08:17:32
x){nu65z5s@rIɺF9 G7YıI*'lX^clnPS64 фP,+*CШ
f:>m50POfU3I5/.H̳
tgv>ݾi뚧{74aSe
Pltok#`"qFЀzBSM[h۵p ^U 2$g F
计算 (x+3y-2z)(x-3y+2z)2 (a+b+c-2)(a+b-c+2)
计算 (x+3y-2z)(x-3y+2z)
2 (a+b+c-2)(a+b-c+2)
计算 (x+3y-2z)(x-3y+2z)2 (a+b+c-2)(a+b-c+2)
(x+3y-2z)(x-3y+2z)
=x²-(3y-2z)²
=x²-9y²-4z²+12yz
(a+b+c-2)(a+b-c+2)
=(a+b)²-(c-2)²
=a²+2ab+b²-c²+4c-4
平方差公式。
=[X+(3y-2z)][X-(3y-2z)]
=X^2-(3y-2z)^2
2(a+b+c-2)(a+b-c+2)=2[(a+b)+(c-2)][(a+b)-(c-2)]
=2[(a+b)^2-(c-2)^2]
2(x+y-z)-3(x-y+z)-5(x+y-z)+6(x-y+z) 计算
计算(x+2y-3z)(x-2y+3z)+(2y-3z)²
计算:(3x+2y-z)(-3x+2y-z)
如何计算(x-2y+3z)(x+2y-3z)?
运用乘法公式计算:(x+2y-3z)(x-2y+3z)
计算:x^2/(x-y)(x-z)+y^2/(y-x)(y-z)+z^2/(z-x)(z-y)
计算:(y-x)(z-x)/(x-2y+z)(x+y-2z)+(z-y)(x-y)/(x+y-2z)(y+z-2x)+(x-z)(y-z)/(y+z-2x)(x-2y+z)
计算:3x-2y- [-4x+(z+3y)]
补充习题 9.计算{x-2y+3z}{x+2y-3z}计算{x-2y+3z}{x+2y-3z}
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)计算(X+3Y+2X)(-X-3y-2Z)
计算(x-y-z)^2
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
计算(x+2y-3z)^2+(x-2y+3z)(x+2y-3z)
(x+2y+3z)-(3x+2y-z)+(2x-3y+4z) 用直式计算
计算(x+2y-3z)的平方+(x-2y+3z)(x+2y-3z)
2(x+y)(x+y-z)+3(y-z)(x+y-z)
计算X+2Y+3Z=10X+2Y+3Z=104X+3Y+2Z=15求x+y+z=?