Question

用因式分解怎样做

Answer 1

x^5-x³
=x³（x²-1)
=x³(x+1)(x-1)

x^6-y^6
=(x³+y³)(x³-y³)
=(x+y)(x²-xy+y²)(x-y)(x²+xy+y²)

a²b²-4ab+4
=(ab-2)²