(1+√2)x²=(1-√2)x,x²-2x-3=0
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(1+√2)x²=(1-√2)x,x²-2x-3=0(1+√2)x²=(1-√2)x,x²-2x-3=0(1+√2)x²=(1-√2)x,x²
(1+√2)x²=(1-√2)x,x²-2x-3=0
(1+√2)x²=(1-√2)x,
x²-2x-3=0
(1+√2)x²=(1-√2)x,x²-2x-3=0
原式可化为
(1+根号2)x方-(1-根号2)x=0 两边乘(√2-1)
(√2+1)(√2-1)x²-(1-√2)(√2-1)x=0
(2-1)x²+(2-2√2+1)x=0
x²+(3-2√2)x=0
x(x+3-2√2)=0
x1=0 x2=2√2-3
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