(3x+2)(3x-2)-5x(x-1)-(2x-1)²计算 求详细步骤
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(3x+2)(3x-2)-5x(x-1)-(2x-1)²计算 求详细步骤
(3x+2)(3x-2)-5x(x-1)-(2x-1)²计算 求详细步骤
(3x+2)(3x-2)-5x(x-1)-(2x-1)²计算 求详细步骤
(3x+2)(3x-2)-5x(x-1)-(2x-1)²
=(9x²-4)-(5x²-5x)-(4x²-4x+1)
=9x²-4-5x²+5x-4x²+4x-1
=(9x²-5x²-4x²)+(5x+4x)-4-1
=9x-5
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
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
x(x平方-1)+2X平方(X+1)-3X(2X-5)帮个忙
*-----------------------------------------------*| 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 ||
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
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
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
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
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化简:x(2x+1)-x(x-3)
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(x+1)(x+2)(x+3)(x+4)+1(x+1)(x-2)(x+3)(x-4)+25
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)