x^2n+6x^n-y^2m+9 因式分解
问题描述：
x^2n+6x^n-y^2m+9 因式分解
答
=（x^n+3）^2-(y^m)^2
=(x^n+3+y^n)(x^n+3-y^n)
答
x^2n + 6x^n + 9 - y^2m
= (x^n + 3)² - (y^m)²
= (x^n + 3 + y^m)(x^n + 3 - y^m)
不懂可追问，望采纳！
答
x^2n+6x^n-y^2m+9
=(x^2n+6x^n+9)-y^2m
=(x^n+3)^2-y^2m
=(x^n+3+y^m)(x^n+3-y^m)
答
x^2n+6x^n-y^2m+9
=x^2n+6x^n+9-y^2m
=(x^n+3)^2-y^2m
=(x^n+3-y^m)(x^n+3+y^m)