Question

因式分解 1.（x+4)(x+1)+3x 2. (m²+1）²-4m 求解~~~谢谢各位的帮助

Answer 1

.（x+4)(x+1)+3x=x²+4x+x+4+3x=x²+8x+4
(m²+1）²-4m=m^4+2m^2+1-4m

Answer 2

1.=x^2+8x+4
=x^2+8x+16 - 12
=(x+4+3根号2）（x+4-3根号2)

2. = (m-1)(m^3+m^2+3m-1)