25a^2-10a+1-b^2因式分解
问题描述:
25a^2-10a+1-b^2因式分解
答
(5-a-b)(5-a+b)
答
25a^2-10a+1-b^2
=(5a-1)^2-b^2
=(5a-1-b)(5a-1+b)
答
25a^2-10a+1-b^2
=(5a-1)²-b²
=(5a+b-1)(5a-b-1)