解7x^2-6x+1=0
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解7x^2-6x+1=0解7x^2-6x+1=0解7x^2-6x+1=07x^2-6x+1=0(7x-1)(x-1)=0x1=1/7x2=1公式法7x²-6x+1=0x=(6±√8)/14∴
解7x^2-6x+1=0
解7x^2-6x+1=0
解7x^2-6x+1=0
7x^2-6x+1=0
(7x-1)(x-1)=0
x1=1/7 x2=1
公式法 7x²-6x+1=0 x=(6±√8)/14
∴x=(3±√2)/7
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*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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