化简:3ab-3(2a²+ab-3b²)
来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/09/23 16:27:15
化简:3ab-3(2a²+ab-3b²)
计算:(2x+y)(2x-y)-(2x-y)²
(x²+x+5)(x²-x+5)
(a+3)²-(a+2)²(a-2)²
计算:(2x+y)(2x-y)-(2x-y)²
(x²+x+5)(x²-x+5)
(a+3)²-(a+2)²(a-2)²
3ab-3(2a²+ab-3b²)
=-3(2a²+ab-ab-3b²)
=9b²-6a²
(2x+y)(2x-y)-(2x-y)²
=(2x-y)((2x+y)-(2x-y))
=(2x-y)2y
=4xy-2y²
(x²+x+5)(x²-x+5)
=((x²+5)+x)((x²+5)-x)
=(x²+5)²-x²(这个化简没意义吧- -!,已经是单项式了啊)
(a+3)²-(a+2)²(a-2)²
=(a+3)²-((a+2)(a-2))²
=(a+3)²-(a²-4)²
=(a²+a-1)(a²-a-7)
=-3(2a²+ab-ab-3b²)
=9b²-6a²
(2x+y)(2x-y)-(2x-y)²
=(2x-y)((2x+y)-(2x-y))
=(2x-y)2y
=4xy-2y²
(x²+x+5)(x²-x+5)
=((x²+5)+x)((x²+5)-x)
=(x²+5)²-x²(这个化简没意义吧- -!,已经是单项式了啊)
(a+3)²-(a+2)²(a-2)²
=(a+3)²-((a+2)(a-2))²
=(a+3)²-(a²-4)²
=(a²+a-1)(a²-a-7)
化简 3a²-[2ab-2(ab-3/2a²b)+ab]+4ab²
已知ab²=6,求ab(a^2b^5-ab^3-b)的值
3a²b+ab²-2a²b²-3ab²-3a²b+4ab
3ab+3b²/b(a²+2ab+b²) ×a²-b²/a-b ÷b/
(9a²-6ab+b²)/(3a²-ab),其中b/a=2
a^2-3ab+b^2/ab=( )/ab-3
a^2-3ab+b^2/ab=( )/ab -3
化简求值:3a²b-[2ab²-2(-a²b+4ab²)]-5ab²,
已知a² + ab=3,b²+ ab=7,求a²-ab-2b²的值
已知a²+ab=3,b²+ab=7,试求a²-ab-2b²
a^2b-ab+2ab^2-5a^b-4ab+3ab^2化简快
已知|a+1|+(a-b-2)²=0化简ab-[3a²b(4ab²+ab)-3a²