解方程 (x-5)²-17(x-5)+30=0

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解方程(x-5)²-17(x-5)+30=0解方程(x-5)²-17(x-5)+30=0解方程(x-5)²-17(x-5)+30=0(x-5-15)(x-5-2)=0(x

解方程 (x-5)²-17(x-5)+30=0
解方程 (x-5)²-17(x-5)+30=0

解方程 (x-5)²-17(x-5)+30=0
(x-5-15)(x-5-2)=0
(x-20)(x-7)=0
x=20 x=7