a math question先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.
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![a math question先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.](/uploads/image/z/11856507-51-7.jpg?t=a+math+question%E5%85%88%E5%8C%96%E7%AE%80%2C%E5%86%8D%E6%B1%82%E5%80%BC%EF%BC%9A%EF%BC%883X%2B1%29%282X-3%29-%286X-5%29%28X-4%29%2C%E5%85%B6%E4%B8%ADX%3D2.)
a math question先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.
a math question
先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.
a math question先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.
(3X+1)(2X-3)-(6X-5)(X-4),
=(6x^2-7x-3)-(6x^2-29x+20)
=22x-23
=22*2-23
=44-23
=21
原式=22X-23=21
化简为 22x-23 结果为21
math question
a math question先化简,再求值:(3X+1)(2X-3)-(6X-5)(X-4),其中X=2.
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