计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²-(2a-3b)(3b+2a).
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 14:40:26
计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²-(2a-3b)(3b+2a).计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²
计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²-(2a-3b)(3b+2a).
计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²-(2a-3b)(3b+2a).
计算:(2+xy)(xy-2)-(-2+xy)²;(a+2b)²-(2a-3b)(3b+2a).
原式=(2+xy-xy+2)(xy-2)=4(xy-2)
原式=a^2+4ab+4b^2-(4a^2-9b^2)=-3a^2 +4ab+13b^2
计算:(xy-x2)÷xy分之x2-2xy+y2
计算:3xy-4xy-(-2xy)要过程
计算-xy-(4z-2xy)-(3xy-4z)
(-3xy+2xy)-(4xy+xy)
计算:3xy(x²y-xy²+xy)-xy²(2x-xy+2x)
3xy-4xy-(-2xy)
1.3xy -4xy-(2xy)
3xy-3xy-xy+2yx
3xy-4xy-(-2xy)
2xy.(-3xy)÷(xy)
2xy-xy-(-3xy)=
计算:(2xy²)³×(-2xy)需要过程!
计算3xy^2 ·(-2xy)RT
计算:3xy[2xy-x(y-2)+x]
计算(2xy-1)(2-3xy)帮我一下,
计算3xy[2xy-x(y-2)+x-1]
(x^2+xy/x-y)/(xy/x-y)计算
计算;(-2xy)(3xy²)=( )