(xy)的二次方-3xy-10

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/09 02:25:02
(xy)的二次方-3xy-10(xy)的二次方-3xy-10(xy)的二次方-3xy-10e9753100000000,(xy)^2-3xy-10应用十字叉乘法分解,-10=-5×2,-3=-5+2=

(xy)的二次方-3xy-10
(xy)的二次方-3xy-10

(xy)的二次方-3xy-10
e9753100000000,
(xy)^2-3xy-10应用十字叉乘法分解,-10=-5×2,-3=-5+2
=(xy-5)(xy+2)

(xy)的二次方-3xy-10
=(xy-5)(xy+2)

(xy)^2-3xy-10
=(xy-5)(y+2)

将xy看成一个整体就好了
(xy)²-3(xy)-10
=(xy+2)(xy-5)

(xy+2)(xy-5)