若(-2x)^2x(3x^2-ax-6)-3x^3+bx^2中不含x的二次项和三次项,则a+b=
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若多项式2x*x*x*x-3x*x*x+ax*x+7x+b能被x*x+x-2整除,求a:b
不等式x^2+ax-6
α:x^2-ax-6
-x^2+ax-1
x^2-ax+4
ax已知x·x+3x-2=0,求2·x·x·x+6·x·x-4x的值.
若函数fx={x^2+ax+1 x≥1 2x-6,x
若x*x+ax-6a可分解因式为(x-2)(x+b),求a.b
已知函数f(x)=x^2-ax+4,x∈[-3,-1],若f(x)
若函数f(x)= ax^2+1,x>0 x^3,x
有这样一道题:若整式(2x^2+3ax-x+4)-(3x^2-5ax+2x)+(x^2-ax+6)的值与字母x无关,是确定a的值
若整式(2x²+3ax-x+4)-(3x²-5ax+2x)+(x²-ax+6)的值与x无关,试确定a的值
若整式(2x²+3ax-x+4)-(3x²-5ax+2x)+(x²-ax+6)的值与字母x无关,试确定a的值
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约分:(1) x^2+2x+1/x^2+x ; (2) 3x-6/x^2-4x+4; (3)ax^2/a+ax打错了应为::(1) (x^2+2x+1)/(x^2+x) ; (2) (3x-6)/(x^2-4x+4); (3)(ax^2)/(a+ax)
函数f(x)=(x2+2x-3)/(x-1) (x>1) ax+1 (x
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
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