分解因式:
a²-8a+16
=(a-4)^2
-4mn-4m²-n²
=-(2m+n)^2
(a+2b)²+6(a+2b)+9
=(a+2b+3)^2
(x-1)(x+3)+1
=x^2+2x-2
=(x+1)^2-3
=(x+1+√3)(x+1-√3)
分解因式:
a²-8a+16
=(a-4)^2
-4mn-4m²-n²
=-(2m+n)^2
(a+2b)²+6(a+2b)+9
=(a+2b+3)^2
(x-1)(x+3)+1
=x^2+2x-2
=(x+1)^2-3
=(x+1+√3)(x+1-√3)