因式分解 x^4-8x^2+4

2024-12-17 10:35:02
推荐回答(2个)
回答1:

=x^4-4x²+4-4x²
=(x²-2)²-(2x)²
=(x²+2x-2)(x²-2x-2)

回答2:

( x^2-4)^2-12