(x一5)(x一丨)等于1怎么因式分解

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(x一5)(x一丨)等于1怎么因式分解(x一5)(x一丨)等于1怎么因式分解(x一5)(x一丨)等于1怎么因式分解(x一5)(x一丨)=1x²-6x+5=1x²-6x=-4x

(x一5)(x一丨)等于1怎么因式分解
(x一5)(x一丨)等于1怎么因式分解

(x一5)(x一丨)等于1怎么因式分解
(x一5)(x一丨)=1
x²-6x+5=1
x²-6x=-4
x²-6x+9=-4+9
(x-3)²=5
x-3=√5或x-3=-√5
即:x=3+√5 或 x=3-√5