Question

分解因式x的四次方-x三次方+x-1,还有14x²+x-3,

Answer 1

x⁴-x³+x-1

=x³(x-1)+(x-1)

=(x-1)(x³+1)

=(x-1)(x+1)(x²-x+1)

2 1

7 -3

14x²+x-3=(2x+1)(7x-3)