化简x(x-3)+2(x+5)-3(X2-7x+14)
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化简x(x-3)+2(x+5)-3(X2-7x+14)化简x(x-3)+2(x+5)-3(X2-7x+14)化简x(x-3)+2(x+5)-3(X2-7x+14)-2X2-22x+52不好好学习,有问
化简x(x-3)+2(x+5)-3(X2-7x+14)
化简x(x-3)+2(x+5)-3(X2-7x+14)
化简x(x-3)+2(x+5)-3(X2-7x+14)
-2X2-22x+52
不好好学习,有问题,要自己解决.
x方+14x-32
x(x-3)+2(x+5)-3(X2-7x+14)
=x^2-3x+2x+10-3x^2+21x-42
=-2x^2+20x-32
=-2*(x-8)(x-2)
-2X2-22x-32
楼上有没算错啊
要好好学习阿
x(x-3)+2(x+5)-3(X2-7x+14)
=x^2-3x+2x+10-3x^2+21x-42
=-2x^2+20x-32
=-2(x^2-10x+16)
=-2(x-2)(x-8)
(x2-3x)2-x(x2-3x)-2x2
5(x2-x)=3(x2+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
-2x2-5x+-2x2-5x+3
不等式:(x2+3x+3)/(x2+2x+5)
化简：x2-3x+5
计算:x2-5x+6/x2-4x+3 + x2-4x+3/x2-2x+1 + x2-3x-4/1-x2
化简1/x2-3x+2 +1/x2-x +1/x2+x +1/x2+3x+2
2x2-5x+3
-2x2+3x-5
3x2+5x
x2-2x-3
X2-2X-3
-x2+2x-3
(x-x2)(x2+x-6)分之(x2+3x)(x2-3x+2)
x2+3x+9/x2-27+6x/9x-x2-x-1/6+2x 化简
化简x2+3x+9/x2-27+6x/9x-x2-x-1/6+2x
(x2+5x+2)(x2+5x+3)-12怎么因式分解 (x2)是x的平方,