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If the square of the equation of minus five x plus ax plus five brackets does not contain the quartic term of x, then a is equal to.
(-5x^3)(x^2+ax+5)=-5x^5-5ax^4-25x^3

∵-5ax^4=0 ∴a=0

If the square of the equation of minus five x plus ax plus five brackets does not contain the quartic term of x, then a is equal to zero.

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