2(X-3)^2=X^2-9 继续分解因式法

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 09:23:12

2(X-3)^2=X^2-9 继续分解因式法
2(X-3)^2=X^2-9 继续分解因式法

2(X-3)^2=X^2-9 继续分解因式法
2(X-3)^2=X^2-9
(2x-6)(X-3)=(x+3)(x-3)
(2x-6)(X-3)-(x+3)(x-3)=0
(x-3)(2x-6-x-3)=0
(x-3)(x-9)=0
x1=3 x2=9

2(X-3)^2=X^2-9
2(X-3)^2-(X-3)(X+3)=0
(X-3)(2X-6-X-3)=0
(X-3)(X-9)=0
X1=3 X2=9

2(X-3)^2=X^2-9
2*(x-3)*(x-3)=(x-3)*(x+3)
2*(x-3)=x+3
2x-6=x+3
x=9