- (2006•巴中)分解因式:a3﹣10a2+25a=______________
- (2011•北京)已知a2+2ab+b2=0,求代数式a(a+4b)﹣(a+2b)(a﹣2b)的值.
- (2011•湛江)下列计算正确的是( )A.a2•a3=a5B.a+a=a2C.(a2)3=a5D.a2(a+1)=a3+1
- (2009?桂林)分解因式:x2+3x=____________
- (2011?湛江)多项式2x2﹣3x+5是_______次_______项式.
- (2011•湛江)若:A32=3×2=6,A53=5×4×3=60,A54=5×4×3×2=120,A64=6×5×4×3=360,…,观察前面计算过程,寻找计算规律计算A73=...
- (2011•临沂)下列运算中正确的是( )A.(﹣ab)2=2a2b2B.(a+b)2=a2+1C.a6÷a2=a3D.2a3+a3=3a3
- (2011•临沂)分解因式:9a﹣ab2=__________________
- (2011•潍坊)分解因式:a3+a2﹣a﹣1=_______________
- (8分)先化简,然后从-2≤x≤2的范围内选取一个合适的整数作为x的值代入求值.
- 因式分解a2-b2= .
- 因式分解:-3x2+6xy-3y2= .
- 计算:__________.
- 因式分解:_______________.
- (2011•泰安)下列运算正确的是( )A.3a2+4a2=7a4B.3a2﹣4a2=﹣a2C.3a•4a2=12a2D.