麻煩幫幫忙,from 1 Math 最好俾埋步驟,唔該! 10-2x+5x-2y 20-3x-30-y+4y -3x+4y+5x-2y 2x(x要2次方)-2x-x(2次方)+5x 5-x-x(2次方)+2-3x 2x+3x-4x 5(2x)(3x)(2y) 5x(3x)+5x+3x x+2x+4x 9-3p+7p-4 4x-2y-6x+9y 21y-40x+12x-9y |
你搵d咩啊- - |
10-2x+5x-2y =3x-2y+10 |
10-2x+5x-2y =10+3x-2y 20-3x-30-y+4y =20-30+4y-y-3x =-10+3y-3x -3x+4y+5x-2y =-3x+5x+4y-2y =2x+2y 2x+3x-4x =5x-4x =x 5(2x)(3x)(2y) =5乘2乘3乘2乘x(2次方)乘y =60x(x要2次方)y x+2x+4x =3x+4x =7x 9-3p+7p-4 =9-4-3p+7p =5+4p 4x-2y-6x+9y =4x-6x+9y-2y =-2x+7y 21y-40x+12x-9y =21y-9y+12x-40x =12y-28x 自己計左..應該岩..吾岩吾好打我-.- 有d冇計..因為吾識xd-.- |
咁詳細ge@_@ |
嘩 ~_~ 15號先教呢D野 我15號完左代數啦 |
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