(-9m的2次+4n的2次)除以(3m+2n)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/28 14:48:05
(-9m的2次+4n的2次)除以(3m+2n)(-9m的2次+4n的2次)除以(3m+2n)(-9m的2次+4n的2次)除以(3m+2n)(-9m^2+4n^2)÷(3m+2n)=(4n^2-9m^2

(-9m的2次+4n的2次)除以(3m+2n)
(-9m的2次+4n的2次)除以(3m+2n)

(-9m的2次+4n的2次)除以(3m+2n)
(-9m^2+4n^2)÷(3m+2n)
=(4n^2-9m^2)÷(3m+2n)
=(2n+3m)(2n-3m)÷(3m+2n)
=2n-3m

(-9m^2+4n^2)/(3m+2n)
=-(3m+2n)(3m-2n)/(3m+2n)
=2n-3m

(-9m^2+4n^2)/(3m+2n)
=-(3m+2n)(3m-2n)/(3m+2n)
=-(3m-2n)
=2n-3m