数学用因试分解法解下列方程27x^2-18x=-3(x+2)^2=2x+427x^2-18x=-27x^2-18x=-3
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数学用因试分解法解下列方程27x^2-18x=-3(x+2)^2=2x+427x^2-18x=-27x^2-18x=-3
数学用因试分解法解下列方程
27x^2-18x=-3
(x+2)^2=2x+427x^2-18x=-27x^2-18x=-3
数学用因试分解法解下列方程27x^2-18x=-3(x+2)^2=2x+427x^2-18x=-27x^2-18x=-3
27x^2-18x+3=0
9x^2-6x+1=0
(3x-1)^2=0
3x-1=0
x=1/3
1)27x²-18x=-3
3(9x²-6x+1)=0
9x²-6x+1=0
(3x-1)²=0
3x-1=0
x=1/3
2)没看懂
1. 3(x-1)~2=0
27x^2-18x=-3
27x^2-18x+3=0
3(9x^2-6x+1)=0
3(3x-1)^2=0
(3x-1)^2=0
3x-1=0
3x=1
x=1/3
(x+2)^2 is not equal to 2x+427x^2-18x is not equal to -27x^2-18x
(x+2)^2=-3
(...
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27x^2-18x=-3
27x^2-18x+3=0
3(9x^2-6x+1)=0
3(3x-1)^2=0
(3x-1)^2=0
3x-1=0
3x=1
x=1/3
(x+2)^2 is not equal to 2x+427x^2-18x is not equal to -27x^2-18x
(x+2)^2=-3
(x+2)=(+ or -)sqrt(3)i
x=(+ or -)sqrt(3)i-2
-27x^2-18x=-3
-27x^2-18x+3=0
-3(9x^2-6x+1)=0
-3(3x-1)^2=0
(3x-1)^2=0
3x-1=0
x=1/3
427x^2-18x+2x=-3
x=(16(+ or -)sqrt(27072)i)/854
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