x^3+12x^2+47x+60

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^3+12x+47x+60 x^3+12x^2+47x+60 (4/x-5)+(x-3)/(12-x)=(x-45)/(x^2-17x+60) 紧急~~~分解因式：①(x^4)-(3x^3)-(5x^2)+3x+4=? ②(x^3)-(6x^2)+9x-4=? ③(x^3)+(12x^2)+47x+60=?求大神要有过程 *-----------------------------------------------*| 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 || x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) 通分:x+4/x^2-8x+15,x-5/x^2+x-12,x-3/x^2-x-20 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. x(x-2)(x-3) {x|(x+3)(x-2) -x^3+x^2-x 4x+2x+x-3x=12 (x^5-12x^3+36x)/(x^2-6) 3x-{-4x+{5x-(12x-10]+2} |x|-2/x*x-x-12 1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少 x×x+3x-9/ x+2