6X^2-(2X-1)(3X-2)+(X+2)(X-2)
=6x^2-6x^2+7x-2+x^2-4
=x^2+7x-6
=4+14-6
=12
化簡再求值:6X^2-(2X-1)(3X-2)+(X+2)(X-2),其中X=2
化簡再求值:6X^2-(2X-1)(3X-2)+(X+2)(X-2),其中X=2
數(shù)學人氣:649 ℃時間:2020-03-27 09:21:24
優(yōu)質解答
我來回答
類似推薦
- 先化簡,再求值:(3x+1)(2x-3)-(6x-5)(x-4),其中x=-2.
- 先化簡,再求值:6x2-(2x+1)(3x-2)+(x+3)(x-3),其中x=1/2.
- (3x-1)(2x+3)-(x-2)(6x-5),其中x=-8分之3,先化簡,在求值
- 先化簡,再求值:(3x-1)(2x+3)-(x-2(6x-5),其中x=-3/8
- 化簡,求值:2x的二次方-[5x+3(1-1/6x)+3x的二次方],其中x=-2/3
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個數(shù)據與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運嗎
- 6邊長為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as