在今晚8：00前給我!答對者重重加分!
分解因式:
(1)x^2+5x
(2)-10x^2y-5xy^2+15xy
(3) （x+2）（x+3）+3x^2+3x-2
(4)(-8a^mb^3+12a^m+1b^2+16a^m+2b
(5)3x^y-6xy+x
(6)-4(m-1)^3n^3+16(m-1)^3n^2-26(m-1)^3n
(7)a^3-ab^2
（8）（x+1)^2-(2x-3)^2
(9) 9(x-y)^2-6(x-y)+1
(10）16^4y^4-1
(11)m^2(a-2)+m(2-a)
(12)4(x+y+z)^2-9(x-y-z)^2
(13)4012(a-b)+9(a-b)^2
(14)a^4+2a^2+1
(15)a^4-16
(17)(m-n)^3-(m-n)
(18)a^2+10a+25
(19)xy^3-2x^2y^2+x^3y
(20)(x^2+4y^2)^2-16x^2y^2