解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/19 21:37:50
解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
x){|i;~g=tV)Uh[(EB(dBX`1L'DQ\MR>/˱c5)0B&b]@d 26; MP=eRkMQ6s~qAb4pmTUj 5'J

解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5

解方程:(1)x²-6x+9=0 (2(x-3)(-x-3)-(x-2)²+2x(x-3)=5
(1)x²-6x+9=0
(x-3)(x-3)=0
x=3
(2)(x-3)(-x-3)-(x-2)²+2x(x-3)=5
-x²-3x+3x+9-(x²-4x+4)+2x²-6x=5
-x²+9-x²+4x-4+2x²-6x=5
-2x=-5+5
-2x=0
x=0

x²-6x+9=0
(x-3)²=0,x=3