2x^2+1=2√5x 和 9(2X-1)^2-8=0
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2x^2+1=2√5x和9(2X-1)^2-8=02x^2+1=2√5x和9(2X-1)^2-8=02x^2+1=2√5x和9(2X-1)^2-8=0X1=(2√5+2√3)/2X2=(2√5-2√3
2x^2+1=2√5x 和 9(2X-1)^2-8=0
2x^2+1=2√5x 和 9(2X-1)^2-8=0
2x^2+1=2√5x 和 9(2X-1)^2-8=0
X1=(2√5+2√3)/2 X2=(2√5-2√3)/2
(X-1)^2=8/9 X1=2√2/3+1 X2=-2√2/3+1
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
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