(1) 2(x+3)² = x(x+3) (2) x²-2(根号5)+2=0(3) (x+1)²-3(x+1)+2=0.帮下忙叭.
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![(1) 2(x+3)² = x(x+3) (2) x²-2(根号5)+2=0(3) (x+1)²-3(x+1)+2=0.帮下忙叭.](/uploads/image/z/9480470-14-0.jpg?t=%281%29+2%28x%2B3%29%26sup2%3B+%3D+x%28x%2B3%29+%282%29+x%26sup2%3B-2%28%E6%A0%B9%E5%8F%B75%29%2B2%3D0%283%29+%28x%2B1%29%26sup2%3B-3%28x%2B1%29%2B2%3D0.%E5%B8%AE%E4%B8%8B%E5%BF%99%E5%8F%AD.)
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(1) 2(x+3)² = x(x+3) (2) x²-2(根号5)+2=0(3) (x+1)²-3(x+1)+2=0.帮下忙叭.
(1) 2(x+3)² = x(x+3) (2) x²-2(根号5)+2=0
(3) (x+1)²-3(x+1)+2=0.
帮下忙叭.
(1) 2(x+3)² = x(x+3) (2) x²-2(根号5)+2=0(3) (x+1)²-3(x+1)+2=0.帮下忙叭.
2(x+3)² = x(x+3) x²-2(根号5)+2=0
(x-(根号5))²=3
2(X+3)=x X-(根号5)=根号3
x=-3 X=根号5+根号3
(x+1)²-3(x+1)+2=0
((x+1)-3/2)²=1/4
x+1-3/2=1/2
x=1
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