9（x-1）的2次方=5 6x的2次方 2x=0 x的2次方-8x 11=0 (x-3）的2次方 x的2次方=9
9(x-1)^2=5(x-1)^2=5/9(x-1)^2=(V5/3)^2(x-1)^2-(V5/3)^2=0(x-1-V5/3)(x-1 V5/3)=0x1=1 V5/3x2=1-V5/36x^2 2x=02x(3x 1)=0x1=0 x2=-1/3x^2-8x 11=0(x^2-2*4x 16)-5=0(x-4)^2-5=0(x-4-V5)(x-4 V5)=0x1=4 V5 x2=4-V5(x-3)^2 x^2=9(x-3)^2 (x^2-9)=0(x-3)^2 (x-3)(x 3)=0(x-3)[(x-3) (x 3)]=02x(x-3)=0x1=0 x2=3。 全部
9(x-1)^2=5(x-1)^2=5/9(x-1)^2=(V5/3)^2(x-1)^2-(V5/3)^2=0(x-1-V5/3)(x-1 V5/3)=0x1=1 V5/3x2=1-V5/36x^2 2x=02x(3x 1)=0x1=0 x2=-1/3x^2-8x 11=0(x^2-2*4x 16)-5=0(x-4)^2-5=0(x-4-V5)(x-4 V5)=0x1=4 V5 x2=4-V5(x-3)^2 x^2=9(x-3)^2 (x^2-9)=0(x-3)^2 (x-3)(x 3)=0(x-3)[(x-3) (x 3)]=02x(x-3)=0x1=0 x2=3。
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