分解因式:x^4+x^3+x^2-1

2024-11-19 06:27:08
推荐回答(5个)
回答1:

x^4+x^3+x^2-1
=x^4-1+x^3+x^2
=(x^2+1)(x^2-1)+x^2(x+1)
=(x^2+1)(x^2-1)+x^2(x+1)
=(x^2+1)(x+1)(x-1)+x^2(x+1)
=(x+1)(x^3-x^2+x-1+x^2)
=(x+1)(x^3+x-1)

回答2:

(x的立方+x-1)(x+1)

回答3:

=x的3次方(x+1)+(x+1)(x-1)
=(x+1)(x的3次方+x-1)

回答4:

回答5:

x^3(x^+1)+(x+1)(x—1)
=(x^3+x+1)(x-1)