(一元一次方程)(多项式)展开下列各式1.9分1(3-6x)2.4(x+2)3.(2-10x)(-4y)4.10(10x-6)5.(x+2)x6.2x(x2+x+1)7.g.2(x^2-3x+7)8.x---(2x^2+4x^4-12)29.(a^2-3a)(-a)一元一次方程1.x/3-x/6=12.3x/2+4=x/5+x+13.0.4x-0.5=0.2(x-6)4.2y/3+

Question

(一元一次方程)(多项式)
展开下列各式
1.9分1(3-6x)
2.4(x+2)
3.(2-10x)(-4y)
4.10(10x-6)
5.(x+2)x
6.2x(x2+x+1)
7.g.2(x^2-3x+7)
8.x
---(2x^2+4x^4-12)
2
9.(a^2-3a)(-a)
一元一次方程
1.x/3-x/6=1
2.3x/2+4=x/5+x+1
3.0.4x-0.5=0.2(x-6)
4.2y/3+y/4=2
5.4(w-2)=w+2
6.2(w-8)=-5(w-5)
7.4(w-1)=3-w
8.3w+9=-2(1-w)
9.2(2-w)=w-3
10.5w+4=w-12
11.=7=-3w+15
12.0=24w-6 列式thx

Answer 1

1.9分1(3-6x)
=1/3-2/3x
2.4(x+2)
= 4x+8
3.(2-10x)(-4y)
=40xy-8y
4.10(10x-6)
=100x-60
5.(x+2)x
= x^2+2x
6.2x(x2+x+1)
=2xx2+2x^2+2x
7.g.2(x^2-3x+7)
=2x^2-6x+14
8.x
---(2x^2+4x^4-12)
2
=-8x^4-4x^2+x+24
9.(a^2-3a)(-a)
=-a^3-3a^2
一元一次方程
1.x/3-x/6=1
x/6=1即：x=6
2.3x/2+4=x/5+x+1
3/10x=-3即：x=-10
3.0.4x-0.5=0.2(x-6)
0.2x=-0.7 即：x=-3.5
4.2y/3+y/4=2
11/12y=2即：y=24/11
5.4(w-2)=w+2
3w=10 即：w=10/3
6.2(w-8)=-5(w-5)
7w=41 即：w=41/7
7.4(w-1)=3-w
5w=7 即：w=7/5
8.3w+9=-2(1-w)
w=-11
9.2(2-w)=w-3
-3w=-7 即：w=7/3
10.5w+4=w-12
4w=-16 即：w=-4
11.7=-3w+15
w=8/3
12.0=24w-6 列式thx
w=4