>
数学
>
已知A=x
3
-5x
2
,B=x
2
-11x+6,求A-2B的值.
人气:354 ℃ 时间:2019-09-18 00:24:18
解答
∵A=x
3
-5x
2
,B=x
2
-11x+6,
∴A-2B=(x
3
-5x
2
)-2(x
2
-11x+6)
=x
3
-5x
2
-2x
2
+22x-12
=x
3
-7x
2
+22x-12.
推荐
已知A=x3-5x2,B=x2-11x+6,求A-2B的值.
已知A=x3-5x2,B=x2-11x+6,求:当x=-1时,求A+5B的值.
已知A=X的3次方-5X的2次方+6 B=X的2次方-11X-6 求A+B 3A-2B
已知a=x的3次方-5x的2次方,b=x的2次方-11x+6 1)求a+2b的值 2)当x=-1求a+5b的值
A=x的立方-5x的平方,B=x的平方-11x+6,求A+2B
证明f(x)=[√(1 x²) x-1]
步行街文化广场的大钟5时敲5下,8秒钟敲完.12时敲12下,需要多长时间敲完
1/1x2+1/2x3+1/3x4...+1/2006x2007=等于多少啊!
猜你喜欢
英文男女对唱baby cuse i need you so I'll ever never ever let you go,歌曲一开始就是女声独唱,
Who ________ we go swimming with tomorrow afternoon?用shall还是will
What letter is good for your health?It's______.
We have this house since 2003怎么改正
模仿伊索寓言写一则寓言并写出寓意 (寓言最好简短一点)
-When was your brother born -He was born ( )
一元一次不等式练题
He is a brave,good man,and the people love him.这句的意思
© 2026 79432.Com All Rights Reserved.
电脑版
|
手机版