a²-b²=(a+b)(a-b)=4
(a+b)²(a-b)²
=[(a+b)(a-b)]²
=4²
=16
初中數(shù)學(xué)已知a²-b²=4,那么(a+b)²(a-b)²的值
初中數(shù)學(xué)已知a²-b²=4,那么(a+b)²(a-b)²的值
數(shù)學(xué)人氣：866 ℃時間：2020-04-08 00:56:52
優(yōu)質(zhì)解答
我來回答
類似推薦
- 已知a+b=10,ab=21,求a²+b²
- 已知有理數(shù)a,b,c滿足|a－b－3|＋（b＋1）²＋|c－1|＝0,求（－3ab）·（c-1）的值
- a²-（a-1）²=
- 定義一種新計算,a*b＝a（a²+b） x為什么值時,（-2）*X＝-6
- 已知a＋b=4,a-b=3.求a²-b²的值
- 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(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
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