20道初二因式分解题目,急!
1.若2x3+3x2+mx+1为x+1的倍式,则m=2.因式分解3a3b2c-6a2b2c2+9ab2c3=3.因式分解xy+6-2x-3y=4.因式分解x2(x-y)+y2(y-x)=5.因式分解2x2-(a-2b)x-ab=6.因式分解a4-9a2b2=7.若已知x3+3x2-...
1.若2x3+3x2+mx+1为x+1的倍式,则m=2.因式分解3a3b2c-6a2b2c2+9ab2c3=3.因式分解xy+6-2x-3y=4.因式分解x2(x-y)+y2(y-x)=5.因式分解2x2-(a-2b)x-ab=6.因式分解a4-9a2b2=7.若已知x3+3x2-...