1.m的五次方-m
=m(m^4-1)
=m(m²-1)(m²+1)
=m(m-1)(m+1)(m²+1)
2.18x³y²-2x³
=2x³(9y²-1)
=2x³(3y-1)(3y+1)
3.(x²+4)²-16x²
=【(x²+4)-4x】【(x²+4)+4x】
=(x-2)²(x+2)²
1.m的五次方-m
=m(m^4-1)
=m(m²-1)(m²+1)
=m(m-1)(m+1)(m²+1)
2.18x³y²-2x³
=2x³(9y²-1)
=2x³(3y-1)(3y+1)
3.(x²+4)²-16x²
=【(x²+4)-4x】【(x²+4)+4x】
=(x-2)²(x+2)²