x²-9x²y²+6xy-1a²b²+16ab+60

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/05 15:53:48
x²-9x²y²+6xy-1a²b²+16ab+60
x)P+.-0ֵ2*!YEa"34KL63I*ǯf;Yk }$ @mCM m7b652,¸F`ZH,`h$A}l<_Ɏf3K@Jv@1 b06  4i]3y;D|tT֠27T

x²-9x²y²+6xy-1a²b²+16ab+60
x²-9x²y²+6xy-1
a²b²+16ab+60

x²-9x²y²+6xy-1a²b²+16ab+60
x²-9x²y²+6xy-1=x²-(3xy-1)²=(x-3xy+1)(x+3xy-1)
a²b²+16ab+60=a²b²+16ab+64-4=(ab+8)²-4=(ab+8-2)(ab+8+2)=(ab+6)(ab+10)

第一题:(x-3xy+1)(x+3xy-1)
第二题:(ab+10)(ab+6)

x²-9x²y²+6xy-1=x²-(9x²y²-6xy+1)=x²-(3xy-1)²=(x+3xy-1)(x-3xy+1)
a²b²+16ab+60=(ab)²+2*8ab+64-4=(ab+8)²-2²=(ab+10)(ab+6)