解方程 x²+2√2x+2=0 (x-1)²-3(x-1)+2=0 (5x-4)²-(4x-3)²=0

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解方程 x²+2√2x+2=0 (x-1)²-3(x-1)+2=0 (5x-4)²-(4x-3)²=0

解方程 x²+2√2x+2=0 (x-1)²-3(x-1)+2=0 (5x-4)²-(4x-3)²=0
解方程 x²+2√2x+2=0 (x-1)²-3(x-1)+2=0 (5x-4)²-(4x-3)²=0

解方程 x²+2√2x+2=0 (x-1)²-3(x-1)+2=0 (5x-4)²-(4x-3)²=0
x²+2√2x+2=0
(x+√2)²=0
x=-√2
(x-1)²-3(x-1)+2=0
(x-1-2)*(x-1-1)
x1=3 x2=2
(5x-4)²-(4x-3)²=0
((5x-4)+(4x-3))*((5x-4)-(4x-3))=0
x1=7/9 x2=1

(x+根号2)平方=0 x1=x2=根号2 x1=3,x2=2 x1=1,x2=1/9