要使(x^2+ax+1)(-6x^3+x^4)的展开式中不含X^4项,则a应等于
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要使(x^2+ax+1)(-6x^3+x^4)的展开式中不含X^4项,则a应等于
要使(x^2+ax+1)(-6x^3+x^4)的展开式中不含X^4项,则a应等于
要使(x^2+ax+1)(-6x^3+x^4)的展开式中不含X^4项,则a应等于
-6ax^4+x^4=0
a=1/6
要使(x^2+ax+1)(-6x^3+x^4)的展开式中不含X^4项,则a应等于
-x^2+ax-1
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)
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函数f(x)=(x2+2x-3)/(x-1) (x>1) ax+1 (x
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因式分解x^2-x-ax-1
因式分解:x^3+6x^3+11x+6 6x^4+5x^3+3x^2-3x-2 x^4-11x^2+1 2x^3-ax^2-5a^2x-2a^3x^3+6x^2+11x+66x^4+5x^3+3x^2-3x-2x^4-11x^2+12x^3-ax^2-5a^2x-2a^3
已知{x|ax^2-ax+1
已知{x|ax^2-ax+1
集合{x|ax^2-ax+1
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