用乘法分配律去括号1.Ⅹ-(Ⅹ+Ⅴ)2.-2Ⅹ+(3Ⅹ+2Ⅴ)3.Ⅹ⑵-(2Ⅹ⑵-2Ⅹ+1)
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![用乘法分配律去括号1.Ⅹ-(Ⅹ+Ⅴ)2.-2Ⅹ+(3Ⅹ+2Ⅴ)3.Ⅹ⑵-(2Ⅹ⑵-2Ⅹ+1)](/uploads/image/z/1008461-29-1.jpg?t=%E7%94%A8%E4%B9%98%E6%B3%95%E5%88%86%E9%85%8D%E5%BE%8B%E5%8E%BB%E6%8B%AC%E5%8F%B71.%E2%85%A9-%28%E2%85%A9%2B%E2%85%A4%292.-2%E2%85%A9%2B%283%E2%85%A9%2B2%E2%85%A4%293.%E2%85%A9%E2%91%B5-%282%E2%85%A9%E2%91%B5-2%E2%85%A9%2B1%29)
用乘法分配律去括号1.Ⅹ-(Ⅹ+Ⅴ)2.-2Ⅹ+(3Ⅹ+2Ⅴ)3.Ⅹ⑵-(2Ⅹ⑵-2Ⅹ+1)
用乘法分配律去括号
1.Ⅹ-(Ⅹ+Ⅴ)
2.-2Ⅹ+(3Ⅹ+2Ⅴ)
3.Ⅹ⑵-(2Ⅹ⑵-2Ⅹ+1)
用乘法分配律去括号1.Ⅹ-(Ⅹ+Ⅴ)2.-2Ⅹ+(3Ⅹ+2Ⅴ)3.Ⅹ⑵-(2Ⅹ⑵-2Ⅹ+1)
X-X-V
-2x+3X+2V
2x-4-2x+1
不知道对不对数学好差啊
X-X-V=-V
-2X+3X+3V=X+3V
X(2)-2X(2)+2X-1
=-X(2)+2X-1
=-(X-1)(2)
X-X-V
-2x+3X+2V
-3X(2)+1
然后合并同类项
如此简单的题楼上的却没一个全对,唉----
1:X-X-V=-V
2:-2Ⅹ+(3Ⅹ+2Ⅴ) =X+2V
3:=-(X-1)^2
1.x-x-v
2.2x+3x+2v
3.x(2)+2X(2)-1
54yh4e