(3x-1)^2=49 (2) x^2-2x-3=0 (3) (x-1)(x+2)=4 (4) -6x^2-7x=0第四小题 打错了 (4) -6x^2-7x-2=0
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(3x-1)^2=49(2)x^2-2x-3=0(3)(x-1)(x+2)=4(4)-6x^2-7x=0第四小题打错了(4)-6x^2-7x-2=0(3x-1)^2=49(2)x^2-2x-3=0(3
(3x-1)^2=49 (2) x^2-2x-3=0 (3) (x-1)(x+2)=4 (4) -6x^2-7x=0第四小题 打错了 (4) -6x^2-7x-2=0
(3x-1)^2=49 (2) x^2-2x-3=0 (3) (x-1)(x+2)=4 (4) -6x^2-7x=0
第四小题 打错了 (4) -6x^2-7x-2=0
(3x-1)^2=49 (2) x^2-2x-3=0 (3) (x-1)(x+2)=4 (4) -6x^2-7x=0第四小题 打错了 (4) -6x^2-7x-2=0
(3x-1)²=49=(±7²)
3x-1=-7,3x-1=7
x=-2,x=8/3
x²-2x-3=0
(x+1)(x-3)=0
x=-1,x=3
(x-1)(x+2)=4
x²+x-2-4=0
x²+x-6=0
(x+3)(x-2)=0
x=-3,x=2
-6x²-7x=0
-x(6x+7)=0
x=0,x=-7/6
(1)2,8/3 (2)-1,3 (3)2,-3 (4)-1/2,-2/3
(3x-1)^2=49
(3x-1)=+/-7
3x=8或3x=-6
即x=8/3或x=-2
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
(X+1)X(X+2)X(X+3)=504
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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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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解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
(1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1
(1)(2x/x-1)-(x-1/x)=1 (2)(x^2-4x/x^2-1)+1=2x/x+1 (3)(x+4/x^2+2x)-(1/x+2)=(2/x)+1
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x+5/x+1-3x-3/x+5=8x+28/x^2+4X-5-2(x+5)/(x+1)-(3x-3)/(x+5)=(8x+28)/(x^2+4X-5)-2
1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)