:一元二次方程的应用(急)已知4x²+kxy+y²可分解得到(2x+2y+3^1/2)(mx+ny),求实数k、m、n的值.貌似打错了......2x+2y+3^1/2y
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/31 07:17:57
![:一元二次方程的应用(急)已知4x²+kxy+y²可分解得到(2x+2y+3^1/2)(mx+ny),求实数k、m、n的值.貌似打错了......2x+2y+3^1/2y](/uploads/image/z/5078290-58-0.jpg?t=%EF%BC%9A%E4%B8%80%E5%85%83%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%9A%84%E5%BA%94%E7%94%A8%EF%BC%88%E6%80%A5%EF%BC%89%E5%B7%B2%E7%9F%A54x%26%23178%3B%2Bkxy%2By%26%23178%3B%E5%8F%AF%E5%88%86%E8%A7%A3%E5%BE%97%E5%88%B0%EF%BC%882x%2B2y%2B3%5E1%2F2%29%28mx%2Bny%29%2C%E6%B1%82%E5%AE%9E%E6%95%B0k%E3%80%81m%E3%80%81n%E7%9A%84%E5%80%BC.%E8%B2%8C%E4%BC%BC%E6%89%93%E9%94%99%E4%BA%86......2x%2B2y%2B3%5E1%2F2y)
xՒN0_0(&z!zMc" ck7xL6iwz%85d{Y[W=.떽89ny>;XY]Tݐ fEY
0 '.aCZ\O865b9Þ.qS4w4ta:qUpJݏ1P6V)?+Ud^N)^I%Lj^0@/
@&X#IDE
8,RJne]Ξyη=ԷnjA?K0XH%Kޠ1q{un+xcx(J78Na.䡩ROdPTp7Akxd6
K,Jw@gXnkno;#B_X
:一元二次方程的应用(急)已知4x²+kxy+y²可分解得到(2x+2y+3^1/2)(mx+ny),求实数k、m、n的值.貌似打错了......2x+2y+3^1/2y
:一元二次方程的应用(急)
已知4x²+kxy+y²可分解得到(2x+2y+3^1/2)(mx+ny),求实数k、m、n的值.
貌似打错了......2x+2y+3^1/2y
:一元二次方程的应用(急)已知4x²+kxy+y²可分解得到(2x+2y+3^1/2)(mx+ny),求实数k、m、n的值.貌似打错了......2x+2y+3^1/2y
4x²+kxy+y²=(2x+2y+3^1/2)(mx+ny)=2mx^2+2nxy+2mxy+2ny^2+3^1/2mx+3^1/2ny
=2mx^2+(2n+2m)xy+2ny^2+3^1/2mx+3^1/2ny
2m=4 (2n+2m)=k 2n=1 3^1/2m=0 3^1/2n=0
m、n、k无解,题目有误
可能是4x²+kxy+y²=(2x+2y)(mx+ny)
4x²+kxy+y²=(2x+2y)(mx+ny)=2mx^2+(2n+2m)xy+2ny^2
2m=4 (2n+2m)=k 2n=1
m=2 n=1/2 k=5
你怎么分解的
m是2.n是二分之一 k是5
m=2 n=1 k=6 3^1/2是什么,没懂起 你纳闷分解勒哦, 3^1/2像多余了