2x-3)^2+1=(3x-1)^2-5(x+3)(x-3)
4x^2-12x+9+1=9x^2-6x+z-5x^2+45
-36=6x
x=-6
(3x+2)(2-3x)＜5x-9(x-6)(x+1)
(2+3x)(2-3x)＜5x-9x^2+45x+54
4-9x^2＜-9x^2+50x+54
-50＜50x
x>-1
2(x-3)^=x^-9 （x+1）(x-3)=12 (3x+2)^=4(x-3)^
1个回答
相关问题
-
3x^2-x=1,9x^4+12x^3-11x^2-4x+2001=?
-
一.1/2x-4+1/2=3/2-x 二.1/x+3-2/3-x=12/x^2-9
-
计算:2X（1/2X²-1)-3X(1/3X²+2/3)因式分解:4+12(x-y)+9(x-y)&
-
3x^4-2x^3-9x^2+12x-4=0 怎样因式分解为 （x-1)^2*(x+2)*(3x-2)=0
-
(x1-x2+4x3-2x4=0;x1-x2-x3+2x4=0;3x1+x2+7x3-2x4=0;x1-3x2-12x3
-
1/x-3-2/3-x=12/x^2-9
-
若3x2-x-1=0,则9x4+12x3-3x2-7x+1999=?
-
分解因式：（1）x3+3x2-4；（2）x4-11x2y2+y4；（3）x3+9x2+26x+24；（4）x4-12x+
-
2*(x-2)+3*(4x-1)=9*(x-1)+12
-
X1+2X2-X3+X4=12X1-3X2+X3+2X4=23X1-X2+3X4=3X1-5X2+2X3+X4=1还是打