Question

因式分解

-x²+3x=
a²-100b²=
3.2x³-8x=
4.3(a+b)²-27c²=
5.16(x+y)²-25(x-y)²=
6.(a²-b²)+(3a-3b)=
7.a²(a-b)+b²(b-a)=
8.a²+10a+25=
9.-n²+12mn-36m²=
10.xy³-2x²y²+x³y=
11.(x+2y)²-2（x+2y）+1=
12.16m四次方-8m²n²+n四次方=
13.x²-4xy-1+4y²=
14.4a²-3b(4a-3b)=
15.2005²-4010*2003+2003²
哪位大神能帮帮我啊实在很急

Answer 1

x(3-x)
(a-10b)(a+10b)
2x(x+2)(x-2)
3(a+b-3c)(a+b+3c)
(9y-x)(9x-y)
(a-b)(a+b+3)
(a-b)²(a+b)
(a+5)²
-(n-6m)²
xy(x+y)²
(x+2y-1)²
(4m²-n²)²
(x-2y)²-1
(2a-3b)²
（2005-2003）²=4