x+5≥6①x-2≤1②

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x+5≥6①x-2≤1②

x+5≥6①x-2≤1②
x+5≥6①x-2≤1②

x+5≥6①x-2≤1②
(1) x大于等于1 (2)x小于等于3

*-----------------------------------------------*| 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 || 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 x+5≥6①x-2≤1② 解不等式组(1){ (x+5)/2>x,①x-3(x-1)≤5;② (2)x-2<6(x+3),①5(x-1)-6≥4(x+1);② 3≤|8-x| |x+1|>2-x |x+3|7|x+1| x^2-6|x|+9>0 |x-1|+|x+2|≥5 (1)方法 ①3a(5a-2b) ②(x-3y) ×(-6x) ③化简x(x-1)+2x(x+1)-3x(2x-5) ①(x+2)(x+3)②(X-4)(x+1) 一元一次不等式 1.解下列不等式:(1) 3 x + 5 > 1 + 5 x ; (2) 2 - 5 x ≥ 7- 6 x ;(3) x -3 / 2 > x + 6 / 5 ; (3) 5 ( x + 2 ) / 4 > 2 x -2.2.解下列不等式:(1) 1 0 - 4 ( x -3 ) ≤ 2 ( x -1 ) ; (2) x +5 / 两个初升高衔接教材的数学题.①(x²+x+1)(x²+x+2)-12=(x²+x+1)(x²+x+1+1)-12=(x²+x+1)²+(x²+x+1)-12=(x²+x-3)(x²+x+5)[十字相乘法]②(x²+x)²-8(x²+x)+12=(x²+x-2)(x²+x-6)[ 解不等式组,①2x-1>x+1,3x+1>10.②解不等式组(x-3)/4+6≥x,4-5(x-2) 1/x(x+1)+1/(x+1)(x+2)+…+1/(x+4)(x+5) 求 ①(x-1/y)÷(y-1/x) ②约分 4(x的平方+4x+4)/6(x的平方-4) ① x(x-3)<3x(x+2)-2x的平方-2x的平方-3 ②2(x的平方-2)-4x(1-x)≥16+6x(x-1) x^6-x^5+x^4-x^2+x-1 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 解下列不等式和不等式组,写出解集(要步骤)①5x+15>4x-13 ②2x-1/3≤3x-4/6 ③{ x-5>1+2x ④{ x-x-2/2≤1+4x/33x+2<4x 1+3x>2(2x-1) (1)x²-2x+1/x²+9x-10≥0 (2)3x²-7x/2x²-5x-3≤1 难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6 数学题啊!解不等式(过程)4x-2≥5x+7x+15>2x-36(x+2)≤3x-15(x+2)≤6x+13x-1≥6x-25(x+2)3x+20x-5/4 +1≤6x-23x+4>x/2 -1 解不等式组①3x-2(9-x)>3(7+2x)-(11-6x).②2(3x-1)-3(4x+5)≤x-4(x-7)