计算-xy-(4z-2xy)-(3xy-4z)
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计算-xy-(4z-2xy)-(3xy-4z)
计算-xy-(4z-2xy)-(3xy-4z)
计算-xy-(4z-2xy)-(3xy-4z)
-xy-(4z-2xy)-(3xy-4z)
=-xy-4z+2xy-3xy+4z
=-2xy
计算-xy-(4z-2xy)-(3xy-4z)
-xy(4z-2xy)-(3xy-4z) 化简
(-3xy+2xy)-(4xy+xy)
3(xy-z)^2-(2xy+z)(-z+2xy)
计算:3xy-4xy-(-2xy)要过程
3(xy-2z)+(-xy+32);
3xy-4xy-(-2xy)
3xy-4xy-(-2xy)
3(xy-2z)-2(-xy+3z)
3(xy+2z)+(-xy+3z) 怎样做
3(xy-2z)+(-xy+3z)化简
3(xy-2z)+(-xy+3z)怎么算
3(xy—2z)+(—xy+3z)简化
3(xy-2z)+(-xy+2z)怎样化简
计算:3xy-4xy-(-2xy)3xy-4xy-(-2xy)-1/3ab-1/4a²+1/3a²-(-2/3ab)
计算xy^2(-xy)^2-3/2xy^3*4/3x^2y
计算:①3xy·4y² ②-2xy·3xy²
计算(-1/2xy²)²(3xy-4xy²+1)