(1) 4(0.9+x)=60 (2)1.4x+3.2X3=23.6 (1)(x-6.5)X5(1) 4(0.9+x)=60(2)1.4x+3.2X3=23.6(1)(x-6.5)X5=21.5(4)17x-2x=375
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![(1) 4(0.9+x)=60 (2)1.4x+3.2X3=23.6 (1)(x-6.5)X5(1) 4(0.9+x)=60(2)1.4x+3.2X3=23.6(1)(x-6.5)X5=21.5(4)17x-2x=375](/uploads/image/z/5933820-12-0.jpg?t=%EF%BC%881%EF%BC%89+4%EF%BC%880.9%2Bx%29%3D60+%EF%BC%882%EF%BC%891.4x%2B3.2X3%3D23.6+%EF%BC%881%EF%BC%89%28x-6.5%29X5%EF%BC%881%EF%BC%89+4%EF%BC%880.9%2Bx%29%3D60%EF%BC%882%EF%BC%891.4x%2B3.2X3%3D23.6%EF%BC%881%EF%BC%89%28x-6.5%29X5%3D21.5%EF%BC%884%EF%BC%8917x-2x%3D375)
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(1) 4(0.9+x)=60 (2)1.4x+3.2X3=23.6 (1)(x-6.5)X5(1) 4(0.9+x)=60(2)1.4x+3.2X3=23.6(1)(x-6.5)X5=21.5(4)17x-2x=375
(1) 4(0.9+x)=60 (2)1.4x+3.2X3=23.6 (1)(x-6.5)X5
(1) 4(0.9+x)=60
(2)1.4x+3.2X3=23.6
(1)(x-6.5)X5=21.5
(4)17x-2x=375
(1) 4(0.9+x)=60 (2)1.4x+3.2X3=23.6 (1)(x-6.5)X5(1) 4(0.9+x)=60(2)1.4x+3.2X3=23.6(1)(x-6.5)X5=21.5(4)17x-2x=375
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
(X-3分之x-1-x分之x-4)除以x的平方+3x分之(x+3)(x-2),其中(x-1)(x-2)=0
(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
60%x+25=40 x+30%x=52 19-120%x=7 4分之3x-5%x=17.5 x-10%x=18 (1-25%)x=36 2x+30%x=9.2
解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/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
x^2+x^-2=x^4,化简(x+x^-1+x2)(x-x^-1+x²)(-x+x^-1+x²)(x+x^-1-x²)第18题,
2x-6/4-4x+x^2/(x+2)*x^2-4/3-x,其中x=-1
(x+2分之3x-x+2分之x)/x平方-4分之x(x-1)=4
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
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
(X-1)(X-2)(X+2)(X+3)=60(X-1)(X-2)(X-3)(X-4)+1=0(X-5)/(X-6)+(X-8)/(X-9)=(X-7)/(X-8)+(X-6)/(X-7)
(x+2/x的平方+2x - x-1/x的平方-4x+4) / x-4/x × (2-x)的平方(x+2/x的平方+2x - x-1/x的平方-4x+4) / x-4/x × (2-x)的平方=?(x+2/x的平方+2x 减 x-1/x的平方-4x+4) 除以( x-4/x ) 乘 ( (2-x)的平方)=?
x/(x+1) + (x+2)/(x-2) = 8/(x²-4)
1/(x+1)(x+2) + 1/(x+2)(x+3) + 1/(x+3)(x+4) + ...+ 1/(x+2005)(x+2006) = 1/2x+4012
若x+1/x=4,则x^2/(x^4+x^2+1)=
x-1/x+2-(x-1)/(x平方-4)=1-3/2-x