5/3x^2+5/2x-15/2因式分解.
急,今天就要...
人气：488 ℃ 时间：2020-10-01 11:28:58
解答
5/3 x^2 +5/2 x-15/2
=5(1/3 x^2+1/2 x-3/2)
=5/6(2x^2+3x-9)
=5/6(2x-3)(2x+3)
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