计算:x²-10x+8

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计算:x²-10x+8计算:x²-10x+8计算:x²-10x+8x²-10x+8=(x-5)²+8-25=(x-5)²-17=(x-5+√

计算:x²-10x+8
计算:x²-10x+8

计算:x²-10x+8
x²-10x+8
=(x-5)²+8-25
=(x-5)²-17
=(x-5+√17)(x-5-√17)

x²-10x+8 =
x²-10x+25 - 17=
(x-5)² -17