(40-4x)(20+8x)=1200
32x²-240x+400=0
2x²-15x+25=0
(x-5)(2x-5)=0
x=5或2.5
(40-4x)(20+8x)=1200 解是多少
(40-4x)(20+8x)=1200 解是多少
暫時(shí)還不會(huì)解一元二次
暫時(shí)還不會(huì)解一元二次
數(shù)學(xué)人氣:206 ℃時(shí)間:2020-04-11 06:52:35
優(yōu)質(zhì)解答
我來回答
類似推薦
- 解一元二次方程 (20-8x)(40-4x)=1200
- 一元二次方程(20+4X)(40-x)=1200
- 化為一般式:y=(20+8x)*(40-4x)
- 解不等式組4x+2>8(x-1).4x+20<8x
- 4x(x-40)+8x=680解出來
- 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(gè)數(shù)據(jù)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(cuò)
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(yùn)嗎
- 6邊長(zhǎng)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(jī)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