猜谜:2x事=功÷2;事÷2=功x2;8分之7;的成语谜底分别是

猜谜:2x事=功÷2;事÷2=功x2;8分之7;的成语谜底分别是 猜谜:事÷2等于功×2【打一成语】 猜谜:2X事=功/2,事/2=功X2的成语谜底分别是___、___/:除的意思问事与功分别表示什么? 若 x2-3x+1=0,求（2x2×x3-5x2×x2+2 x3-8x2 ）÷（x2+1 ）的值 解方程：X2--1/8(X2+2X)+X2+2X/3(X2--1)=11 先化简,再求值:(1-x/x+2)·(x2-4/x2-2x+1)÷(1/x2-1)其中x2-x=0. ①x/(x2-1) ·(x2+x)/x2其中x=2 ②(x2-1)/(x2+4x+4)÷(x+1).(x+2﹚/﹙1-x﹚其中x=-3 3x2+10=2x2+8x 用配方 y=x+√(1-x2) y2=x2+(1-x2)+2x√(1-x2) (x3-2x2+ax+2)÷(x2-4x+1)=x+2 a=-7 解方程 2/(x2-x)+6/(1-x2)=7/(x2+x)x2为的平方 (x2-2)÷(x2-2)=1,所以3x=3,x=1 先化简,再求值 x+3/x2-1 ÷(x+3)(x-1)/x2-2x+1,其中x=2007, DIvide x3+x2-14x-24 by x+2Solution x2-x-12/)x-2)x3+x2-14x-24x3+2x/-2x2-14x-x2-2x/-12x-24-12x-24/0In this example we see that x+2 is a factor of x3+x2-14x-24,as the remainder is zero.Thus x3+x2-14x-24÷（x+2）=x2-x-12 with zero remainderso x3+x2-14x 已知：√x=√a+1/√a求（x2+x-6）/x÷(x+3)/(x2-2x)-[(x-2)+√(x2-4x)]/[(x-2)-√(x2-4x)]的值 化简x-1分之x+1-x2-1分之x2-2x÷x2-x-2/x2+2x+1 (2x÷0.5)x2-2x=24 化简求值:X2/X2-1÷(1-2X/X-1-X+1)其中X满足X2+7X=0